{"title":"Busch Burs","description":"","products":[{"product_id":"busch-fig-411ct-twincut-concave-cone-cup-burs-0-80-2-30mm","title":"Busch Fig. 411CT - Twincut Concave Cone Cup Burs .80mm-2.30mm-6 Packs","description":"\u003cp\u003eCup burs round and finish prong tips during stone setting. Busch Fig. 411CT Twincut Concave Cone Cup Burs cut cleanly and clear shavings efficiently, giving controlled shaping with a smooth, consistent result on 3\/32\" shanks.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFig. 411CT concave cone cup bur with twincut blade geometry\u003c\/li\u003e\n\u003cli\u003eDesigned for finishing and rounding prong tips during stone setting\u003c\/li\u003e\n\u003cli\u003eTwincut design allows efficient removal of metal shavings\u003c\/li\u003e\n\u003cli\u003eManufactured from tungsten vanadium steel\u003c\/li\u003e\n\u003cli\u003eMade to ultra-high precision tolerances\u003c\/li\u003e\n\u003cli\u003e3\/32\" (2.35 mm) shank fits standard flex shaft handpieces and bur holders\u003c\/li\u003e\n\u003cli\u003eSold in multiples of 6 per size\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAvailable Options\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eDiameter (mm)\u003c\/th\u003e\n\u003cth\u003eDiameter (in)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.411008\u003c\/td\u003e\n\u003ctd\u003e0.80 mm\u003c\/td\u003e\n\u003ctd\u003e0.0315\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.411009\u003c\/td\u003e\n\u003ctd\u003e0.90 mm\u003c\/td\u003e\n\u003ctd\u003e0.0354\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.411010\u003c\/td\u003e\n\u003ctd\u003e1.00 mm\u003c\/td\u003e\n\u003ctd\u003e0.0394\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.411011\u003c\/td\u003e\n\u003ctd\u003e1.10 mm\u003c\/td\u003e\n\u003ctd\u003e0.0433\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.411012\u003c\/td\u003e\n\u003ctd\u003e1.20 mm\u003c\/td\u003e\n\u003ctd\u003e0.0472\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.411013\u003c\/td\u003e\n\u003ctd\u003e1.30 mm\u003c\/td\u003e\n\u003ctd\u003e0.0512\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.411014\u003c\/td\u003e\n\u003ctd\u003e1.40 mm\u003c\/td\u003e\n\u003ctd\u003e0.0551\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.411015\u003c\/td\u003e\n\u003ctd\u003e1.50 mm\u003c\/td\u003e\n\u003ctd\u003e0.0591\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.411016\u003c\/td\u003e\n\u003ctd\u003e1.60 mm\u003c\/td\u003e\n\u003ctd\u003e0.0630\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.411017\u003c\/td\u003e\n\u003ctd\u003e1.70 mm\u003c\/td\u003e\n\u003ctd\u003e0.0669\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.411018\u003c\/td\u003e\n\u003ctd\u003e1.80 mm\u003c\/td\u003e\n\u003ctd\u003e0.0709\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.411019\u003c\/td\u003e\n\u003ctd\u003e1.90 mm\u003c\/td\u003e\n\u003ctd\u003e0.0748\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.411020\u003c\/td\u003e\n\u003ctd\u003e2.00 mm\u003c\/td\u003e\n\u003ctd\u003e0.0787\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.411021\u003c\/td\u003e\n\u003ctd\u003e2.10 mm\u003c\/td\u003e\n\u003ctd\u003e0.0827\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.411022\u003c\/td\u003e\n\u003ctd\u003e2.20 mm\u003c\/td\u003e\n\u003ctd\u003e0.0866\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.411023\u003c\/td\u003e\n\u003ctd\u003e2.30 mm\u003c\/td\u003e\n\u003ctd\u003e0.0906\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePrimary use: rounding and finishing prongs during stone setting.\u003c\/li\u003e\n\u003cli\u003eAlso available in Fig. 411T with traditional concave geometry for a more rounded prong profile.\u003c\/li\u003e\n\u003cli\u003eSold in multiples of 6 per size.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Busch Burs","offers":[{"title":".80mm","offer_id":43533778354390,"sku":"B118.411008","price":27.85,"currency_code":"USD","in_stock":true},{"title":".90mm","offer_id":43533778387158,"sku":"B118.411009","price":27.85,"currency_code":"USD","in_stock":true},{"title":"1.00mm","offer_id":43533778419926,"sku":"B118.411010","price":27.85,"currency_code":"USD","in_stock":true},{"title":"1.10mm","offer_id":43533778452694,"sku":"B118.411011","price":27.85,"currency_code":"USD","in_stock":true},{"title":"1.20mm","offer_id":43533778485462,"sku":"B118.411012","price":27.85,"currency_code":"USD","in_stock":true},{"title":"1.30mm","offer_id":43533778518230,"sku":"B118.411013","price":27.85,"currency_code":"USD","in_stock":true},{"title":"1.40mm","offer_id":43533778550998,"sku":"B118.411014","price":27.85,"currency_code":"USD","in_stock":true},{"title":"1.50mm","offer_id":43533778583766,"sku":"B118.411015","price":27.85,"currency_code":"USD","in_stock":true},{"title":"1.60mm","offer_id":43533778616534,"sku":"B118.411016","price":27.85,"currency_code":"USD","in_stock":true},{"title":"1.70mm","offer_id":43533778649302,"sku":"B118.411017","price":27.85,"currency_code":"USD","in_stock":true},{"title":"1.80mm","offer_id":43533778682070,"sku":"B118.411018","price":27.85,"currency_code":"USD","in_stock":true},{"title":"1.90mm","offer_id":43533778714838,"sku":"B118.411019","price":27.85,"currency_code":"USD","in_stock":false},{"title":"2.00mm","offer_id":43533778747606,"sku":"B118.411020","price":27.85,"currency_code":"USD","in_stock":false},{"title":"2.10mm","offer_id":43533778780374,"sku":"B118.411021","price":27.85,"currency_code":"USD","in_stock":true},{"title":"2.20mm","offer_id":43533778813142,"sku":"B118.411022","price":27.85,"currency_code":"USD","in_stock":true},{"title":"2.30mm","offer_id":43533778845910,"sku":"B118.411023","price":27.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-411ct-twincut-concave-cone-cup-burs-80mm-2-30mm-6-packs-otto-frei.jpg?v=1719959186"},{"product_id":"busch-super-silent-heatless-wheels-5-sizes-pack-6","title":"Packs of 6-Busch Super Silent Heatless Wheel","description":"\u003cp\u003eA heatless wheel grinds and shapes metal at the bench while running cool, so delicate work and sensitive materials are not overheated. Busch Super Silent Heatless Wheels are long-lasting, cool-running grinding wheels designed for precision work in jewelry and metalsmithing, manufactured in Germany to exacting quality standards and among the finest grinding wheels available for professional use. They are sold in packs of 6 in five diameter and thickness combinations.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHeatless formula runs cool to protect delicate work and sensitive materials\u003c\/li\u003e\n\u003cli\u003eLong-lasting construction for extended use between replacements\u003c\/li\u003e\n\u003cli\u003eManufactured in Germany to professional quality standards\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple diameter and thickness combinations to suit different applications\u003c\/li\u003e\n\u003cli\u003eSold in convenient packs of 6\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAvailable Options\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eSize (Diameter x Thickness)\u003c\/th\u003e\n\u003cth\u003eModel #\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e111.404\u003c\/td\u003e\n\u003ctd\u003e5\/8\" x 1\/8\"\u003c\/td\u003e\n\u003ctd\u003e767S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e111.405\u003c\/td\u003e\n\u003ctd\u003e5\/8\" x 3\/16\"\u003c\/td\u003e\n\u003ctd\u003e768S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e111.407\u003c\/td\u003e\n\u003ctd\u003e3\/4\" x 1\/8\"\u003c\/td\u003e\n\u003ctd\u003e772S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e111.408\u003c\/td\u003e\n\u003ctd\u003e3\/4\" x 3\/16\"\u003c\/td\u003e\n\u003ctd\u003e773S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e111.410\u003c\/td\u003e\n\u003ctd\u003e7\/8\" x 1\/8\"\u003c\/td\u003e\n\u003ctd\u003e777S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Busch Burs","offers":[{"title":"5\/8\" x 1\/8\" (767S)","offer_id":47551679791318,"sku":"111.404","price":17.8,"currency_code":"USD","in_stock":true},{"title":"5\/8\" x 3\/16\" (768S)","offer_id":47551679824086,"sku":"111.405","price":17.8,"currency_code":"USD","in_stock":true},{"title":"3\/4\" x 1\/8\" (772S)","offer_id":47551679856854,"sku":"111.407","price":17.8,"currency_code":"USD","in_stock":true},{"title":"3\/4\" x 3\/16\" (773S)","offer_id":47551679889622,"sku":"111.408","price":17.8,"currency_code":"USD","in_stock":true},{"title":"7\/8\" x 1\/8\" (777S)","offer_id":47551679922390,"sku":"111.410","price":17.8,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/packs-of-6-busch-super-silent-heatless-wheel-otto-frei.jpg?v=1719959186"},{"product_id":"busch-fig-1au-carbide-round-burs-3-32-shank-0-30mm-3-50mm","title":"Busch Fig 1AU Carbide Round Burs 3\/32\" Shank 0.30mm-3.50mm-By the Piece","description":"\u003cp\u003eRound burs enlarge a drilled hole and cut a secure seat for the rondelle of the stone, the second step in pavé setting. Busch Fig. 1AU carbide round burs are built for that job: used after a 4205S carbide twist drill, they deliver clean, controlled cutting even in the toughest metals. Solid carbide construction and a powerful blade geometry suit them to platinum, titanium, steel, and hard alloys, and the 3\/32 in. (2.35 mm) shank fits standard flex shaft and micromotor handpieces. Sold individually in sizes from 0.30 mm to 3.50 mm.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFig. 1AU round bur for enlarging and shaping drilled seats\u003c\/li\u003e\n\u003cli\u003eIdeal for second-step pavé setting applications\u003c\/li\u003e\n\u003cli\u003eSolid carbide construction for exceptional longevity\u003c\/li\u003e\n\u003cli\u003eSuitable for platinum, titanium, steel, and hard alloys\u003c\/li\u003e\n\u003cli\u003ePowerful blade geometry for efficient cutting\u003c\/li\u003e\n\u003cli\u003e3\/32 in. 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Fig. 27A Flame Steel Cut Burs 1.00mm-1.40mm","description":"\u003cp\u003eFlame shaped burs carve detail, cut undercuts, and shape tight contours in metal at the bench. Busch builds the Fig. 27A flame steel cut bur from tungsten vanadium steel to ultra high precision tolerances, in three sizes from 1.00mm–1.40mm, sold in multiples of six.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFlame shaped bur profile for detailed metal shaping and carving\u003c\/li\u003e\n\u003cli\u003eSuited to detailed carving, undercutting, and shaping work in metal\u003c\/li\u003e\n\u003cli\u003eManufactured from tungsten vanadium steel\u003c\/li\u003e\n\u003cli\u003eProduced to ultra high precision tolerances\u003c\/li\u003e\n\u003cli\u003eAvailable in three sizes ranging from 1.00mm–1.40mm\u003c\/li\u003e\n\u003cli\u003eSold in multiples of six per size\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAvailable Options\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eBur Size\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.587\u003c\/td\u003e\n\u003ctd\u003e1.00mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.588\u003c\/td\u003e\n\u003ctd\u003e1.20mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.589\u003c\/td\u003e\n\u003ctd\u003e1.40mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eSizes less than 4.0mm are sold in multiples of six only. Orders must be placed in quantities of six or multiples thereof.\u003c\/li\u003e\u003c\/ul\u003e","brand":"Busch Burs","offers":[{"title":"1.00mm","offer_id":43557505827030,"sku":"B118.587","price":9.5,"currency_code":"USD","in_stock":true},{"title":"1.20mm","offer_id":43557505859798,"sku":"B118.588","price":9.5,"currency_code":"USD","in_stock":true},{"title":"1.40mm","offer_id":43557505892566,"sku":"B118.589","price":9.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-27a-flame-steel-cut-burs-1-00mm-1-40mm-otto-frei.jpg?v=1719959019"},{"product_id":"busch-447au-pave-cut-carbide-twist-drill-round-burs-3-32-shank-0-80-1-60mm","title":"Busch 447AU Pave Cut Carbide Twist Drill Round Burs On 3\/32\" Shanks","description":"\u003cp\u003eThe Busch Pfingst 447AU Pavé Cut Carbide Bur is an innovative dual-action tool engineered specifically for pavé stone setting. By combining a twist drill and a round bur into a single instrument, it performs pre-drilling and shaping in one step—reducing workflow time while maintaining exceptional accuracy. The result is cleaner seats, improved alignment, and greater efficiency at the bench.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCombines twist drill and round bur in one tool\u003c\/li\u003e\n\u003cli\u003eUp to 50% faster than using two separate burs\u003c\/li\u003e\n\u003cli\u003eDesigned specifically for pavé stone setting\u003c\/li\u003e\n\u003cli\u003ePrecision cutting geometry for accurate seat formation\u003c\/li\u003e\n\u003cli\u003eManufactured from ultra-fine grain carbide\u003c\/li\u003e\n\u003cli\u003eLong-lasting performance with clean cutting action\u003c\/li\u003e\n\u003cli\u003eSold individually (by the piece)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eBur Style\u003c\/th\u003e\n\u003ctd\u003ePfingst 447AU Pavé Cut\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFunction\u003c\/th\u003e\n\u003ctd\u003eCombined twist drill and round bur\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eHot isostatically compressed ultra-fine grain carbide\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShank Size\u003c\/th\u003e\n\u003ctd\u003e3\/32\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003ePavé stone setting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eManufactured In\u003c\/th\u003e\n\u003ctd\u003eGermany\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eBusch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eAvailable Options\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eBur Size\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.448\u003c\/td\u003e\n\u003ctd\u003e0.80mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.449\u003c\/td\u003e\n\u003ctd\u003e0.90mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.450\u003c\/td\u003e\n\u003ctd\u003e1.00mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.451\u003c\/td\u003e\n\u003ctd\u003e1.10mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.452\u003c\/td\u003e\n\u003ctd\u003e1.20mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.453\u003c\/td\u003e\n\u003ctd\u003e1.30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.454\u003c\/td\u003e\n\u003ctd\u003e1.40mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.455\u003c\/td\u003e\n\u003ctd\u003e1.50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.456\u003c\/td\u003e\n\u003ctd\u003e1.60mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cp\u003eThis dual-purpose design consolidates drilling and shaping into a single operation, helping improve consistency and reduce tool changes during pavé work.\u003c\/p\u003e","brand":"Busch Burs","offers":[{"title":"0.80mm","offer_id":43557655576790,"sku":"BAU118.448","price":34.55,"currency_code":"USD","in_stock":true},{"title":"0.90mm","offer_id":43557655609558,"sku":"BAU118.449","price":34.55,"currency_code":"USD","in_stock":true},{"title":"1.00mm","offer_id":43557655642326,"sku":"BAU118.450","price":34.55,"currency_code":"USD","in_stock":true},{"title":"1.10mm","offer_id":43557655675094,"sku":"BAU118.451","price":34.55,"currency_code":"USD","in_stock":true},{"title":"1.20mm","offer_id":43557655707862,"sku":"BAU118.452","price":34.55,"currency_code":"USD","in_stock":true},{"title":"1.30mm","offer_id":43557655740630,"sku":"BAU118.453","price":34.55,"currency_code":"USD","in_stock":true},{"title":"1.40mm","offer_id":43557655773398,"sku":"BAU118.454","price":34.55,"currency_code":"USD","in_stock":true},{"title":"1.50mm","offer_id":43557655806166,"sku":"BAU118.455","price":34.55,"currency_code":"USD","in_stock":true},{"title":"1.60mm","offer_id":43557655838934,"sku":"BAU118.456","price":34.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-447au-pave-cut-carbide-twist-drill-round-burs-on-332-shanks-otto-frei-1.jpg?v=1719958958"},{"product_id":"busch-fig-415-knife-edge-bur-1-0mm-3-5mm-tungsten-vanadium","title":"Busch Fig. 415 Bur Knife Edge 1.0mm - 3.5mm","description":"\u003cp\u003eA knife edge bur cuts the narrow, controlled groove that shapes a seat edge and sharpens definition in precious metal, where a wider profile would remove too much. Busch Fig. 415 knife edge burs, also called lens burs, carry a 55° cutting angle for exactly that work and come in 24 sizes from 1.00 mm to 3.50 mm. 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4203 4 Groove Carbide Twist Drills on 3\/32\" Shanks .70mm to 2.30mm","description":"\u003cp\u003eThe Busch 4203 series carbide twist drills feature a 4-groove design optimized for cutting softer organic materials such as coral and pearls. Mounted on 3\/32\" shanks, these drills are available in 13 sizes ranging from 0.70mm to 2.30mm, making them a versatile addition to any jeweler's or craftsperson's drill collection. Sold individually, each drill delivers outstanding service life when used correctly.\u003c\/p\u003e\n\n\u003cp\u003eFor best results and longest tool life, use these drills in a drill press. As with any drill, excess leverage or canting can cause breakage. When working freehand, operate within the recommended speed range. These drills are \u003cstrong\u003enot suitable for glass, ceramics, or gemstones\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-groove carbide construction\u003c\/strong\u003e engineered for softer materials including coral and pearls\u003c\/li\u003e\n\u003cli\u003eOutstanding service life compared to standard twist drills\u003c\/li\u003e\n\u003cli\u003e3\/32\" shank fits standard flex shaft handpieces and drill presses\u003c\/li\u003e\n\u003cli\u003e13 sizes available from 0.70mm to 2.30mm\u003c\/li\u003e\n\u003cli\u003eSold by the piece — select only the size you need\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eShank Size\u003c\/th\u003e\n\u003ctd\u003e3\/32\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGroove Type\u003c\/th\u003e\n\u003ctd\u003e4-Groove\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eCarbide\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Materials\u003c\/th\u003e\n\u003ctd\u003eCoral, pearls, and other soft organic materials\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNot For Use On\u003c\/th\u003e\n\u003ctd\u003eGlass, ceramics, gemstones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFreehand Speed Range\u003c\/th\u003e\n\u003ctd\u003e5,000–9,000 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDrill Press Speed Range\u003c\/th\u003e\n\u003ctd\u003e8,000–14,000 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize Range\u003c\/th\u003e\n\u003ctd\u003e0.70mm–2.30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold As\u003c\/th\u003e\n\u003ctd\u003ePer piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eAvailable Options\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eDrill Size\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB128.707\u003c\/td\u003e\n\u003ctd\u003e0.70mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB128.708\u003c\/td\u003e\n\u003ctd\u003e0.80mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB128.709\u003c\/td\u003e\n\u003ctd\u003e0.90mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB128.710\u003c\/td\u003e\n\u003ctd\u003e1.00mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB128.711\u003c\/td\u003e\n\u003ctd\u003e1.10mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB128.712\u003c\/td\u003e\n\u003ctd\u003e1.20mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB128.713\u003c\/td\u003e\n\u003ctd\u003e1.30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB128.714\u003c\/td\u003e\n\u003ctd\u003e1.40mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB128.715\u003c\/td\u003e\n\u003ctd\u003e1.50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB128.716\u003c\/td\u003e\n\u003ctd\u003e1.60mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB128.718\u003c\/td\u003e\n\u003ctd\u003e1.80mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB128.721\u003c\/td\u003e\n\u003ctd\u003e2.10mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB128.723\u003c\/td\u003e\n\u003ctd\u003e2.30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUse a starting guide hole when drilling freehand to improve accuracy and reduce breakage risk.\u003c\/li\u003e\n\u003cli\u003eDrill press use is recommended for maximum tool longevity.\u003c\/li\u003e\n\u003cli\u003eAvoid excess lateral pressure or canting, which can cause breakage.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eNot for use with glass, ceramics, or gemstones.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Busch 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Fig 203HSS High Speed Steel Twist Drills on 3\/32\" Shanks-0.50mm to 1.20mm","description":"\u003cp\u003eBusch Fig 203HSS High Speed Steel twist drills are mounted on 3\/32\" shanks, making drill size changes fast and convenient without re-chucking. High Speed Steel offers superior hardness and longer service life compared to standard tungsten vanadium tool steel, thanks to its high temperature stability and strong tensile strength. These precision twist drills are made in Germany by Busch and are sold individually, allowing jewelers and metalsmiths to stock exactly the sizes they need.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh Speed Steel (HSS) construction for extended durability and heat resistance\u003c\/li\u003e\n\u003cli\u003eMounted on 3\/32\" shanks for quick, easy size changes in standard flex-shaft and rotary handpieces\u003c\/li\u003e\n\u003cli\u003eTwist drill geometry for clean, accurate hole drilling in metal and related bench materials\u003c\/li\u003e\n\u003cli\u003eGerman-made Busch quality, trusted by professional jewelers and metalsmiths\u003c\/li\u003e\n\u003cli\u003eSold individually — purchase only the sizes you need\u003c\/li\u003e\n\u003cli\u003eAvailable in seven sizes from 0.50mm to 1.20mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eHigh Speed Steel (HSS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShank Diameter\u003c\/th\u003e\n\u003ctd\u003e3\/32\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFigure\u003c\/th\u003e\n\u003ctd\u003e203HSS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOrigin\u003c\/th\u003e\n\u003ctd\u003eGermany\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold As\u003c\/th\u003e\n\u003ctd\u003eIndividually (per piece)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eAvailable Options\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eDrill Size\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e128.684\u003c\/td\u003e\n\u003ctd\u003e0.50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e128.685\u003c\/td\u003e\n\u003ctd\u003e0.60mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e128.686\u003c\/td\u003e\n\u003ctd\u003e0.70mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e128.687\u003c\/td\u003e\n\u003ctd\u003e0.80mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e128.688\u003c\/td\u003e\n\u003ctd\u003e0.90mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e128.689\u003c\/td\u003e\n\u003ctd\u003e1.00mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e128.690\u003c\/td\u003e\n\u003ctd\u003e1.20mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Busch Burs","offers":[{"title":".50mm","offer_id":43578999341270,"sku":"128.684","price":6.95,"currency_code":"USD","in_stock":true},{"title":".60mm","offer_id":43578999374038,"sku":"128.685","price":6.95,"currency_code":"USD","in_stock":true},{"title":".70mm","offer_id":43578999406806,"sku":"128.686","price":6.95,"currency_code":"USD","in_stock":true},{"title":".80mm","offer_id":43578999439574,"sku":"128.687","price":6.95,"currency_code":"USD","in_stock":true},{"title":".90mm","offer_id":43578999472342,"sku":"128.688","price":6.95,"currency_code":"USD","in_stock":true},{"title":"1.00mm","offer_id":43578999505110,"sku":"128.689","price":6.95,"currency_code":"USD","in_stock":true},{"title":"1.20mm","offer_id":43745481720022,"sku":"128.690","price":6.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-203hss-high-speed-steel-twist-drills-on-332-shanks-0-50mm-to-1-20mm-otto-frei.jpg?v=1719958726"},{"product_id":"busch-fig-414au-carbide-90-degree-hart-burs-3-32-shank-0-90-2-30mm","title":"Busch Fig 414AU Carbide 90 Hart Burs 3\/32\" Shank .90mm-2.30mm By the Piece","description":"\u003cp\u003eA hart bur cuts the seat in a prong so the stone drops in square and holds. Busch Fig 414AU Carbide 90° Hart Burs are precision-ground for exactly that cut, sold individually on 3\/32\" shanks in 15 sizes from 0.90 mm – 2.30 mm. Carbide outlasts both tungsten vanadium and high-speed steel, which makes these the longest-lasting burs available for demanding bench work.\u003c\/p\u003e\u003cp\u003eBusch carbide burs excel on the toughest metals, including platinum, titanium, and steel, while also delivering very long service life on standard gold alloys. The result is a lower cost per use than conventional burs. They are manufactured in Germany using state-of-the-art techniques, with a powerful blade geometry typically found only on steel tooling.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e90-degree hart bur geometry for precise prong seat cutting\u003c\/li\u003e\n\u003cli\u003eCarbide construction that outlasts tungsten vanadium and high-speed steel burs\u003c\/li\u003e\n\u003cli\u003eSuitable for platinum, titanium, steel, and gold alloys\u003c\/li\u003e\n\u003cli\u003eAdvanced blade geometry for superior cutting performance\u003c\/li\u003e\n\u003cli\u003eManufactured in Germany to exacting standards\u003c\/li\u003e\n\u003cli\u003e3\/32\" shank on every size\u003c\/li\u003e\n\u003cli\u003eSold individually, so you choose only the sizes you need\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAvailable Options\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eBur Size\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.509\u003c\/td\u003e\n\u003ctd\u003e0.90 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.510\u003c\/td\u003e\n\u003ctd\u003e1.00 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.511\u003c\/td\u003e\n\u003ctd\u003e1.10 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.512\u003c\/td\u003e\n\u003ctd\u003e1.20 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.513\u003c\/td\u003e\n\u003ctd\u003e1.30 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.514\u003c\/td\u003e\n\u003ctd\u003e1.40 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.515\u003c\/td\u003e\n\u003ctd\u003e1.50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.516\u003c\/td\u003e\n\u003ctd\u003e1.60 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.517\u003c\/td\u003e\n\u003ctd\u003e1.70 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.518\u003c\/td\u003e\n\u003ctd\u003e1.80 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.519\u003c\/td\u003e\n\u003ctd\u003e1.90 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.520\u003c\/td\u003e\n\u003ctd\u003e2.00 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.521\u003c\/td\u003e\n\u003ctd\u003e2.10 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.522\u003c\/td\u003e\n\u003ctd\u003e2.20 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.523\u003c\/td\u003e\n\u003ctd\u003e2.30 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eThe 3\/32\" shank fits standard flex-shaft handpieces.\u003c\/p\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eRelated Busch carbide burs include the Fig 446AU 70° Hart Bur and the Fig 413AU Traditional Setting Bur (BAU118.808AU).\u003c\/p\u003e","brand":"Busch Burs","offers":[{"title":".90mm","offer_id":43579040039126,"sku":"BAU118.509","price":21.95,"currency_code":"USD","in_stock":true},{"title":"1.00mm","offer_id":43579040071894,"sku":"BAU118.510","price":21.95,"currency_code":"USD","in_stock":true},{"title":"1.10mm","offer_id":43579040104662,"sku":"BAU118.511","price":21.95,"currency_code":"USD","in_stock":true},{"title":"1.20mm","offer_id":43579040137430,"sku":"BAU118.512","price":21.95,"currency_code":"USD","in_stock":true},{"title":"1.30mm","offer_id":43579040170198,"sku":"BAU118.513","price":21.95,"currency_code":"USD","in_stock":true},{"title":"1.40mm","offer_id":43579040202966,"sku":"BAU118.514","price":21.95,"currency_code":"USD","in_stock":true},{"title":"1.50mm","offer_id":43579040235734,"sku":"BAU118.515","price":21.95,"currency_code":"USD","in_stock":true},{"title":"1.60mm","offer_id":43579040268502,"sku":"BAU118.516","price":21.95,"currency_code":"USD","in_stock":true},{"title":"1.70mm","offer_id":43579040301270,"sku":"BAU118.517","price":21.95,"currency_code":"USD","in_stock":true},{"title":"1.80mm","offer_id":43579040334038,"sku":"BAU118.518","price":21.95,"currency_code":"USD","in_stock":true},{"title":"1.90mm","offer_id":43579040366806,"sku":"BAU118.519","price":21.95,"currency_code":"USD","in_stock":true},{"title":"2.00mm","offer_id":43579040399574,"sku":"BAU118.520","price":21.95,"currency_code":"USD","in_stock":true},{"title":"2.10mm","offer_id":43579040432342,"sku":"BAU118.521","price":21.95,"currency_code":"USD","in_stock":true},{"title":"2.20mm","offer_id":43579040465110,"sku":"BAU118.522","price":21.95,"currency_code":"USD","in_stock":true},{"title":"2.30mm","offer_id":43579040497878,"sku":"BAU118.523","price":21.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-414au-carbide-90-hart-burs-332-shank-90mm-2-30mm-by-the-piece-otto-frei.jpg?v=1719958714"},{"product_id":"busch-fig-446au-carbide-70-hart-burs-3-32-shank-0-90-2-30mm","title":"Busch Fig 446AU Carbide 70 Hart Burs 3\/32\" Shank .90mm-2.30mm By the Piece","description":"\u003cp\u003eThese burs cut clean, accurate stone seats in prongs on precious and hard metals. Sold by the piece, Busch Fig 446AU carbide 70 degree hart burs mount on a 3\/32\" shank, and the sharp carbide blades bite smoothly into the metal for a controlled, predictable feel at the handpiece.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e70 degree hart profile engineered specifically for cutting prong seats for stone setting\u003c\/li\u003e\n\u003cli\u003eCarbide construction for extremely long service life compared with steel or tungsten vanadium burs\u003c\/li\u003e\n\u003cli\u003eSuitable for use on platinum, titanium, steel, and standard gold alloys\u003c\/li\u003e\n\u003cli\u003ePrecision Busch blade geometry provides aggressive yet controllable cutting action\u003c\/li\u003e\n\u003cli\u003eCalibrated diameter range to match common prong and stone seat dimensions\u003c\/li\u003e\n\u003cli\u003e3\/32\" shank\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAvailable Options\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eDiameter\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.609\u003c\/td\u003e\n\u003ctd\u003e0.90 mm (0.035 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.610\u003c\/td\u003e\n\u003ctd\u003e1.00 mm (0.039 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.611\u003c\/td\u003e\n\u003ctd\u003e1.10 mm (0.043 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.612\u003c\/td\u003e\n\u003ctd\u003e1.20 mm (0.047 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.613\u003c\/td\u003e\n\u003ctd\u003e1.30 mm (0.051 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.614\u003c\/td\u003e\n\u003ctd\u003e1.40 mm (0.055 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.615\u003c\/td\u003e\n\u003ctd\u003e1.50 mm (0.059 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.616\u003c\/td\u003e\n\u003ctd\u003e1.60 mm (0.063 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.617\u003c\/td\u003e\n\u003ctd\u003e1.70 mm (0.067 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.618\u003c\/td\u003e\n\u003ctd\u003e1.80 mm (0.071 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.619\u003c\/td\u003e\n\u003ctd\u003e1.90 mm (0.075 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.620\u003c\/td\u003e\n\u003ctd\u003e2.00 mm (0.079 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.621\u003c\/td\u003e\n\u003ctd\u003e2.10 mm (0.083 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.622\u003c\/td\u003e\n\u003ctd\u003e2.20 mm (0.087 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU118.623\u003c\/td\u003e\n\u003ctd\u003e2.30 mm (0.091 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCarbide burs offer the longest service life compared with tungsten vanadium and high-speed steel burs.\u003c\/li\u003e\n\u003cli\u003eUse light, controlled hand pressure and let the bur do the cutting, especially in very hard alloys.\u003c\/li\u003e\n\u003cli\u003eOther Busch carbide shapes are available separately: Fig 414AU 90 degree hart bur (Part # BAU118.509) and Fig 413AU traditional setting bur (Part # BAU118.808AU).\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Busch Burs","offers":[{"title":".90mm","offer_id":43579040530646,"sku":"BAU118.609","price":21.95,"currency_code":"USD","in_stock":true},{"title":"1.00mm","offer_id":43579040563414,"sku":"BAU118.610","price":21.95,"currency_code":"USD","in_stock":true},{"title":"1.10mm","offer_id":43579040596182,"sku":"BAU118.611","price":21.95,"currency_code":"USD","in_stock":false},{"title":"1.20mm","offer_id":43579040628950,"sku":"BAU118.612","price":21.95,"currency_code":"USD","in_stock":true},{"title":"1.30mm","offer_id":43579040661718,"sku":"BAU118.613","price":21.95,"currency_code":"USD","in_stock":true},{"title":"1.40mm","offer_id":43579040694486,"sku":"BAU118.614","price":21.95,"currency_code":"USD","in_stock":true},{"title":"1.50mm","offer_id":43579040727254,"sku":"BAU118.615","price":21.95,"currency_code":"USD","in_stock":true},{"title":"1.60mm","offer_id":43579040760022,"sku":"BAU118.616","price":21.95,"currency_code":"USD","in_stock":true},{"title":"1.70mm","offer_id":43579040792790,"sku":"BAU118.617","price":21.95,"currency_code":"USD","in_stock":true},{"title":"1.80mm","offer_id":43579040825558,"sku":"BAU118.618","price":21.95,"currency_code":"USD","in_stock":true},{"title":"1.90mm","offer_id":43579040858326,"sku":"BAU118.619","price":21.95,"currency_code":"USD","in_stock":true},{"title":"2.00mm","offer_id":43579040891094,"sku":"BAU118.620","price":21.95,"currency_code":"USD","in_stock":true},{"title":"2.10mm","offer_id":43579040923862,"sku":"BAU118.621","price":21.95,"currency_code":"USD","in_stock":true},{"title":"2.20mm","offer_id":43579040956630,"sku":"BAU118.622","price":21.95,"currency_code":"USD","in_stock":true},{"title":"2.30mm","offer_id":43579040989398,"sku":"BAU118.623","price":21.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/32-shank-90mm-2-30mmbusch-fig-446au-carbide-70-hart-burs-332-shank-90mm-2-30mm-by-the-piece-otto-frei.jpg?v=1719958714"},{"product_id":"busch-4203s-2-groove-carbide-twist-drills-3-32-shank-0-70mm-1-60mm","title":"Busch 4203S 2 Groove Carbide Twist Drills on 3\/32\" Shanks 0.7mm to 1.60mm","description":"\u003cp\u003eThe Busch 4203S carbide twist drills feature a 2-groove design engineered for drilling hard metals including steel, platinum, titanium, and hard alloys of gold and silver. Mounted on 3\/32\" shanks and available in ten sizes from 0.70mm to 1.60mm, these drills deliver outstanding service life that surpasses high-speed steel and standard tungsten carbide bits. The twin-groove construction promotes efficient chip evacuation, reduces heat buildup, and minimizes breakage during demanding drilling operations. These drills can also be used on mild steel. \u003cem\u003eNot for use with glass, ceramics, or gemstones.\u003c\/em\u003e Sold by the piece.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2-groove design expels chips more effectively for improved performance and longer tool life\u003c\/li\u003e\n\u003cli\u003eCarbide construction outlasts high-speed steel and standard tungsten carbide drills in hard jewelry metals\u003c\/li\u003e\n\u003cli\u003eSuitable for steel, platinum, titanium, and hard gold and silver alloys\u003c\/li\u003e\n\u003cli\u003eCompatible with mild steel\u003c\/li\u003e\n\u003cli\u003eUse of a coolant extends drill lifespan\u003c\/li\u003e\n\u003cli\u003eFor freehand use: recommended speed 5,000–9,000 RPM; a starting guide hole is advised\u003c\/li\u003e\n\u003cli\u003eFor drill press use: recommended speed 8,000–14,000 RPM\u003c\/li\u003e\n\u003cli\u003ePerform best in a drill press — excess leverage or canting can cause breakage\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eNot for use with glass, ceramics, or gemstones\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eSold by the piece\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003ctd\u003eBusch 4203S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShank Size\u003c\/th\u003e\n\u003ctd\u003e3\/32\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGroove Count\u003c\/th\u003e\n\u003ctd\u003e2 grooves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eCarbide\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize Range\u003c\/th\u003e\n\u003ctd\u003e0.70mm – 1.60mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFreehand Speed Range\u003c\/th\u003e\n\u003ctd\u003e5,000 – 9,000 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDrill Press Speed Range\u003c\/th\u003e\n\u003ctd\u003e8,000 – 14,000 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold As\u003c\/th\u003e\n\u003ctd\u003eIndividual piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eAvailable Options\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eDrill Size\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU128.427\u003c\/td\u003e\n\u003ctd\u003e0.70mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU128.428\u003c\/td\u003e\n\u003ctd\u003e0.80mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU128.429\u003c\/td\u003e\n\u003ctd\u003e0.90mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU128.430\u003c\/td\u003e\n\u003ctd\u003e1.00mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU128.431\u003c\/td\u003e\n\u003ctd\u003e1.10mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU128.432\u003c\/td\u003e\n\u003ctd\u003e1.20mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU128.433\u003c\/td\u003e\n\u003ctd\u003e1.30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU128.434\u003c\/td\u003e\n\u003ctd\u003e1.40mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU128.435\u003c\/td\u003e\n\u003ctd\u003e1.50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU128.436\u003c\/td\u003e\n\u003ctd\u003e1.60mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBreakage can occur with excess leverage or canting — a drill press is recommended for best results.\u003c\/li\u003e\n\u003cli\u003eUsing a coolant will increase drill lifespan.\u003c\/li\u003e\n\u003cli\u003eWhen drilling freehand, use a starting guide hole to improve accuracy and reduce stress on the bit.\u003c\/li\u003e\n\u003cli\u003eThese drills are \u003cstrong\u003enot suitable\u003c\/strong\u003e for glass, ceramics, or gemstones.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Busch Burs","offers":[{"title":".70mm","offer_id":43579041022166,"sku":"BAU128.427","price":19.8,"currency_code":"USD","in_stock":true},{"title":".80mm","offer_id":43579041054934,"sku":"BAU128.428","price":19.8,"currency_code":"USD","in_stock":false},{"title":".90mm","offer_id":43579041087702,"sku":"BAU128.429","price":19.8,"currency_code":"USD","in_stock":false},{"title":"1.00mm","offer_id":43579041120470,"sku":"BAU128.430","price":19.8,"currency_code":"USD","in_stock":true},{"title":"1.10mm","offer_id":43579041153238,"sku":"BAU128.431","price":19.8,"currency_code":"USD","in_stock":true},{"title":"1.20mm","offer_id":43579041186006,"sku":"BAU128.432","price":19.8,"currency_code":"USD","in_stock":true},{"title":"1.30mm","offer_id":43579041218774,"sku":"BAU128.433","price":19.8,"currency_code":"USD","in_stock":true},{"title":"1.40mm","offer_id":43579041251542,"sku":"BAU128.434","price":19.8,"currency_code":"USD","in_stock":true},{"title":"1.50mm","offer_id":43579041284310,"sku":"BAU128.435","price":19.8,"currency_code":"USD","in_stock":true},{"title":"1.60mm","offer_id":43579041317078,"sku":"BAU128.436","price":19.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-4203s-2-groove-carbide-twist-drills-on-332-shanks-0-7mm-to-1-60mm-otto-frei.jpg?v=1719958715"},{"product_id":"busch-4205s-short-carbide-twist-drills-3-32-shank-0-70mm-1-00mm","title":"Busch 4205S 2 Groove Short Carbide Twist Drills 3\/32\" Shanks-0.70mm to 1.0mm-By the Piece","description":"\u003cp\u003eThe Busch 4205S short carbide twist drills are purpose-built for one critical application: drilling precise holes in hard metals for pavé diamond setting. The short length is intentional — pavé holes are relatively shallow, and longer drills are prone to breakage under torsional stress. These drills deliver the control and reliability that exacting stone-setting work demands.\u003c\/p\u003e\u003cp\u003eDeveloped through a partnership between Busch of Germany and the world's finest micro-diamond setters, the 4205S series has become the go-to solution for what was once a drill-breaking nightmare. These carbide twist drills are trusted by setters working for the most prestigious jewelry names in the industry.\u003c\/p\u003e\u003cp\u003eThe 2-groove design actively expels material from the hole during drilling, reducing heat buildup and extending drill life. Suitable for use on platinum, high-karat white alloys, titanium, steel, gold, silver, and other metal alloys. \u003cstrong\u003eNot for use with glass, ceramics, or gemstones.\u003c\/strong\u003e Also available as a kit of four — see part number BAU128.400.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eShort-length design minimizes torsional stress and reduces drill breakage during pavé setting work\u003c\/li\u003e\n\u003cli\u003eSolid carbide construction for use in hard metals including platinum, titanium, and high-karat white alloys\u003c\/li\u003e\n\u003cli\u003e2-groove geometry expels swarf from the hole, extending drill life and improving hole quality\u003c\/li\u003e\n\u003cli\u003eDeveloped in collaboration with professional micro-diamond setters and Busch of Germany\u003c\/li\u003e\n\u003cli\u003eSuitable for gold, silver, platinum, titanium, steel, and other metal alloys\u003c\/li\u003e\n\u003cli\u003eSold individually — choose only the size you need\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eShank Diameter\u003c\/th\u003e\n\u003ctd\u003e3\/32\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDrill Type\u003c\/th\u003e\n\u003ctd\u003e2-Groove Short Carbide Twist Drill\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSeries\u003c\/th\u003e\n\u003ctd\u003eBusch 4205S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Speed\u003c\/th\u003e\n\u003ctd\u003e3,000–5,000 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold As\u003c\/th\u003e\n\u003ctd\u003eBy the piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNot For Use On\u003c\/th\u003e\n\u003ctd\u003eGlass, ceramics, or gemstones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eAvailable Options\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eDrill Size\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU128.407\u003c\/td\u003e\n\u003ctd\u003e0.70mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU128.408\u003c\/td\u003e\n\u003ctd\u003e0.80mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU128.409\u003c\/td\u003e\n\u003ctd\u003e0.90mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBAU128.410\u003c\/td\u003e\n\u003ctd\u003e1.00mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Busch Burs","offers":[{"title":".70mm","offer_id":43579042201814,"sku":"BAU128.407","price":20.15,"currency_code":"USD","in_stock":false},{"title":".80mm","offer_id":43579042234582,"sku":"BAU128.408","price":20.15,"currency_code":"USD","in_stock":true},{"title":".90mm","offer_id":43579042267350,"sku":"BAU128.409","price":20.15,"currency_code":"USD","in_stock":true},{"title":"1.00mm","offer_id":43579042300118,"sku":"BAU128.410","price":20.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-4205s-2-groove-short-carbide-twist-drills-332-shanks-0-70mm-to-1-0mm-by-the-piece-otto-frei.jpg?v=1719958710"},{"product_id":"busch-5120-carbide-pave-setting-bur-kit-12pc","title":"Busch 5120 Carbide Pave Setting Bur Kit","description":"\u003cp\u003eThis kit drills, seats, and separates pavé settings in hard metal. Microsetting in hard metal alloys like 18k white gold wears through regular tungsten vanadium burs quickly, and cutting steel or titanium with standard burs is virtually impossible. Busch developed the 5120 Carbide Pavé Setting Bur Kit specifically to handle these demanding materials. The carbide construction stays sharp longer and cuts cleaner, delivering outstanding results where conventional burs fall short. This kit contains the essential bur types needed to complete the full pavé setting sequence on hard metals, including steel, platinum, titanium, and hard alloys of gold and silver.\u003c\/p\u003e\u003cp\u003eThe three-step pavé workflow is built into the kit's composition: begin by drilling starter holes with the short carbide twist drills, open and shape the stone seats with the carbide ball burs, then form the prongs and separate the settings using the miniature carbide circular saws. Each bur type is represented in the sizes most commonly needed for pavé work, making this kit a practical starting point for setters working in challenging alloys.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCarbide construction stays sharp longer than tungsten vanadium burs in hard metals\u003c\/li\u003e\n\u003cli\u003eCuts cleanly in steel, platinum, titanium, and hard gold and silver alloys\u003c\/li\u003e\n\u003cli\u003eComplete three-step pavé workflow: drill, seat, and separate\/form prongs\u003c\/li\u003e\n\u003cli\u003e12 pieces: four twist drill sizes, six ball bur sizes, and two circular saw sizes\u003c\/li\u003e\n\u003cli\u003eShort carbide twist drills (Fig 4205S) in 0.7mm, 0.8mm, 0.9mm, and 1.0mm for precise starter holes\u003c\/li\u003e\n\u003cli\u003eRound carbide ball burs (Fig 1AU) in 1.0mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm, and 2.2mm for opening and shaping stone seats\u003c\/li\u003e\n\u003cli\u003eCarbide circular saws (Fig 231F and 231FL) in two kerf widths for prong forming and setting separation\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43579647230166,"sku":"BC118.170","price":160.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-5120-carbide-pave-setting-bur-kit-otto-frei.jpg?v=1719958520"},{"product_id":"busch-fig-231s-thin-saw-edge-wheel-burs-2-30mm-6-pack","title":"Busch Fig. 231S Thin Saw Edge Wheel Burs 2.30mm-Pack of 6","description":"\u003cp\u003eThe thin saw edge wheel profile carries a fine saw edge around a wheel head for precise cutting at the bench. Busch Burs is the most famous name in jewelers' burs, and the Fig. 231S (European Fig. 231 \/ USA Fig. 231S) thin saw edge wheel bur is precision-engineered for demanding bench work. Made from tungsten vanadium steel to ultra-high precision tolerances, these burs are a trusted standard for professional jewelers and metalsmiths who require consistent, reliable cutting performance.\u003c\/p\u003e\n\n\u003cp\u003eThis listing is for the \u003cstrong\u003e2.30mm size\u003c\/strong\u003e, sold in a \u003cstrong\u003epack of 6\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThin saw edge wheel bur profile for precise cutting\u003c\/li\u003e\n\u003cli\u003eMade from tungsten vanadium steel\u003c\/li\u003e\n\u003cli\u003eManufactured to ultra-high precision tolerances\u003c\/li\u003e\n\u003cli\u003e2.30mm wheel diameter\u003c\/li\u003e\n\u003cli\u003eSupplied six burs to a pack\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSizes under 4.0mm are sold in multiples of six only; sizes 4.0mm and above are available individually.\u003c\/li\u003e\n\u003cli\u003eThe Fig. 231S thin saw edge wheel ranges from 2.30mm up to 10.00mm across the wider Busch range.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43580515320022,"sku":"B118.676","price":20.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-231s-thin-saw-edge-wheel-burs-2-30mm-otto-frei.jpg?v=1719958096"},{"product_id":"busch-fig-115a-ambler-bur-1-80mm","title":"Busch Fig. 115A Ambler Burs 1.80mm","description":"\u003cp\u003eThe Fig. 115A Ambler bur is made for precise cutting and shaping work at the bench. Busch is the most famous name in jewelers' burs, trusted by professional jewelers and metalsmiths worldwide, and this bur delivers the precision and consistency that demanding bench work requires. It is offered in 1.80mm and sold individually.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFig. 115A Ambler profile designed for precise cutting and shaping work\u003c\/li\u003e\n\u003cli\u003eFrom Busch, the most recognized name in professional jewelers' burs\u003c\/li\u003e\n\u003cli\u003eOffered in 1.80mm\u003c\/li\u003e\n\u003cli\u003eSold individually\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43582189699286,"sku":"B118.115","price":7.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-115a-ambler-burs-1-80mm-otto-frei.jpg?v=1719957192"},{"product_id":"busch-fig-155-cylinder-square-finishing-bur-kit-6-piece-0-90mm-1-80mm","title":"Busch Fig 155 Cylinder Square Finishing Bur Kit 6 Pieces. 0.90mm To 1.80mm","description":"\u003cp\u003eCylinder square finishing burs cut a flat-bottomed, straight-walled pass through precious metal, and this 6-piece kit brings together Busch Fig 155 Cylinder Square Finishing Burs in a graduated range of 0.90mm to 1.80mm, a trusted selection for jewelers who need precise, consistent results.\u003c\/p\u003e\n\u003cp\u003eTungsten vanadium steel construction gives these burs their hallmark performance: machine made to ultra-high precision tolerances, they cut smoothly and cleanly with no chatter or drag, and each bur in the set is uniformly perfect. All six are mounted on 3\/32\" shanks. The set arrives ready to use in a plastic bur box that keeps each size secure and accessible at the bench.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBusch Fig 155 cylinder square finishing bur profile\u003c\/li\u003e\n\u003cli\u003eTungsten vanadium steel construction for smooth, clean cuts on precious metals\u003c\/li\u003e\n\u003cli\u003eMachine made to ultra-high precision tolerances\u003c\/li\u003e\n\u003cli\u003eNo chatter or drag during use\u003c\/li\u003e\n\u003cli\u003eSix graduated sizes: 0.90, 1.00, 1.20, 1.40, 1.60 and 1.80mm\u003c\/li\u003e\n\u003cli\u003e3\/32\" shanks throughout\u003c\/li\u003e\n\u003cli\u003eIncludes a plastic bur box for bench organization\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe 3\/32\" shank fits standard flex shaft and rotary tool handpieces.\u003c\/li\u003e\n\u003cli\u003eThe included bur box holds 3\/32\" shank burs.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43582567842006,"sku":"118.016","price":16.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-155-cylinder-square-finishing-bur-kit-6-pieces-0-90mm-to-1-80mm-otto-frei.jpg?v=1719956980"},{"product_id":"busch-fig-411c-fast-cut-concave-cone-cup-bur-kit-16-burs-1-00mm-2-30mm","title":"Busch Fig 411C Fast Cut Concave Cone Cup Bur Kit of 16 Burs 1.00mm - 2.30mm","description":"\u003cp\u003eA cup bur finishes and rounds the top of a prong during stone setting. The Busch Fig. 411C fast cut concave cone cup bur has a \u003cem\u003econcave cone\u003c\/em\u003e shape that leaves a more sharply sloped, rounded prong tip than a traditional concave cup bur.\u003c\/p\u003e\u003cp\u003eThis kit holds 16 Fig. 411C fast cut concave cone cup burs, two of each of eight sizes from 1.00 mm to 2.30 mm. The burs are made from tungsten vanadium steel with 3\/32 in shafts, and the kit arrives in a plastic bur box with 48 holes for 3\/32 in shank burs.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eConcave cone geometry creates a more sharply sloped rounded shape on prong tips than traditional concave cup burs\u003c\/li\u003e\n\u003cli\u003eFast cut design for efficient material removal during stone setting finishing work\u003c\/li\u003e\n\u003cli\u003eTungsten vanadium steel construction for durability and cutting performance\u003c\/li\u003e\n\u003cli\u003eGerman steel hardening expertise applied to every bur\u003c\/li\u003e\n\u003cli\u003e3\/32 in shafts\u003c\/li\u003e\n\u003cli\u003eTwo burs per size across eight sizes, 16 burs total\u003c\/li\u003e\n\u003cli\u003eSupplied in a plastic bur box with 48 holes for 3\/32 in shank burs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eThe 3\/32 in shafts fit standard flex shaft handpieces and bur holders.\u003c\/p\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43582572953814,"sku":"118.028","price":54.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-411c-fast-cut-concave-cone-cup-bur-kit-of-16-burs-1-00mm-2-30mm-otto-frei.jpg?v=1719956975"},{"product_id":"busch-fig-411t-twincut-concave-cup-bur-kit-of-13-0-80mm-to-2-00mm","title":"Busch Fig 411T Twincut Concave Cup Bur Kit of 13-0.80mm to 2.00mm","description":"\u003cp\u003eCutting a clean concave seat for a stone starts with a cup bur in exactly the right size. The Busch Fig 411T Twincut Concave Cup Bur is a 3-in-1 design that pairs concave cup geometry with twincut fluting for stone setting, seat preparation, and detail work, and this kit gathers the full size progression in one purchase.\u003c\/p\u003e\u003cp\u003eBusch machines these burs from tungsten vanadium steel to ultra-high precision tolerances, so the geometry stays consistent from the smallest size to the largest. The kit holds one each of all 13 sizes from 0.80 mm to 2.00 mm in 0.10 mm increments, organized in a plastic bur box with 48 holes sized for 3\/32\" shank burs.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBusch Fig 411T Twincut Concave Cup profile, a 3-in-1 design for versatile cutting tasks\u003c\/li\u003e\n\u003cli\u003eTwincut fluting for smooth, efficient material removal\u003c\/li\u003e\n\u003cli\u003eManufactured from tungsten vanadium steel to ultra-high precision tolerances\u003c\/li\u003e\n\u003cli\u003eComplete size range from 0.80 mm to 2.00 mm in 0.10 mm increments\u003c\/li\u003e\n\u003cli\u003e13 burs included, organized in a plastic bur box\u003c\/li\u003e\n\u003cli\u003eConsistent geometry across all sizes for predictable, repeatable results\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43582573379798,"sku":"118.028T","price":54.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-411t-twincut-concave-cone-cup-bur-kit-of-13-0-80mm-to-2-00mm-otto-frei.jpg?v=1719956975"},{"product_id":"busch-fig-203hss-hss-twist-drill-kit-18pc-0-50-1-00mm-3-32-shank","title":"Busch Fig 203HSS High Speed Steel Twist Drill Kit 18 on 3\/32\" Shanks-3 Each- 0.50mm to 1.00mm","description":"\u003cp\u003eThe Busch Fig 203HSS High Speed Steel Twist Drill Kit delivers a professionally curated assortment of 18 drills — 3 each of six sizes ranging from 0.50mm to 1.00mm — all mounted on 3\/32\" shanks. Made in Germany by Busch, these HSS twist drills are engineered to stay sharp longer than conventional Tungsten Vanadium twist drills and, when used properly, offer significantly extended service life. The 3\/32\" shank diameter makes these drills immediately compatible with quick-change handpieces fitted with standard 3\/32\" collets, streamlining workflow at the bench. Having three of each size on hand means a broken drill mid-job won't interrupt production.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh Speed Steel (HSS) construction for superior edge retention over Tungsten Vanadium alternatives\u003c\/li\u003e\n\u003cli\u003eAssortment of 18 drills — 3 each of 6 sizes from 0.50mm to 1.00mm\u003c\/li\u003e\n\u003cli\u003e3\/32\" shanks compatible with standard quick-change handpiece collets\u003c\/li\u003e\n\u003cli\u003eGenuine German-made Busch quality\u003c\/li\u003e\n\u003cli\u003eRedundant quantity per size prevents workflow interruptions from breakage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eFigure\u003c\/th\u003e\n\u003ctd\u003e203HSS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eHigh Speed Steel (HSS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShank Diameter\u003c\/th\u003e\n\u003ctd\u003e3\/32\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize Range\u003c\/th\u003e\n\u003ctd\u003e0.50mm – 1.00mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTotal Pieces\u003c\/th\u003e\n\u003ctd\u003e18 (3 of each size)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOrigin\u003c\/th\u003e\n\u003ctd\u003eGermany\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eDescription\u003c\/th\u003e\n\u003cth\u003eQty\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e128.684\u003c\/td\u003e\n\u003ctd\u003eHSS Twist Drill 0.50mm on 3\/32\" Shank\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e128.685\u003c\/td\u003e\n\u003ctd\u003eHSS Twist Drill 0.60mm on 3\/32\" Shank\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e128.686\u003c\/td\u003e\n\u003ctd\u003eHSS Twist Drill 0.70mm on 3\/32\" Shank\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e128.687\u003c\/td\u003e\n\u003ctd\u003eHSS Twist Drill 0.80mm on 3\/32\" Shank\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e128.688\u003c\/td\u003e\n\u003ctd\u003eHSS Twist Drill 0.90mm on 3\/32\" Shank\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e128.689\u003c\/td\u003e\n\u003ctd\u003eHSS Twist Drill 1.00mm on 3\/32\" Shank\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43582578360534,"sku":"118.086","price":112.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/118.086NEW_thumb_432a1458-adfb-4714-b561-eab222d79c1e.jpg?v=1776183692"},{"product_id":"busch-fig-203hss-twist-drill-kit-12pc-0-50-1-00mm-3-32-shank","title":"Busch Fig 203HSS High Speed Steel Twist Drill Kit of 12-3\/32\" Shanks-2 each- 0.50mm to 1.00mm","description":"\u003cp\u003eThe Busch Fig 203HSS High Speed Steel Twist Drill Kit gives professional jewelers and metalsmiths a practical assortment of precision micro drill sizes in a single package. Made in Germany by Busch, these High Speed Steel (HSS) twist drills stay sharp longer than conventional Tungsten Vanadium twist drills and, when used properly, deliver significantly extended service life. The kit includes 2 each of six sizes ranging from 0.50mm to 1.00mm — 12 drills total — so you have a reliable backup on hand if a fine drill breaks mid-job. All drills feature 3\/32\" diameter shanks for seamless use in quick-change handpieces fitted with standard 3\/32\" collets.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh Speed Steel (HSS) construction stays sharp longer than Tungsten Vanadium twist drills\u003c\/li\u003e\n\u003cli\u003eGenuine German-made Busch quality for professional precision work\u003c\/li\u003e\n\u003cli\u003eKit includes 2 each of 6 sizes — 12 drills total — for built-in redundancy\u003c\/li\u003e\n\u003cli\u003eSize range spans 0.50mm to 1.00mm in 0.10mm increments\u003c\/li\u003e\n\u003cli\u003e3\/32\" diameter shanks are compatible with standard quick-change handpieces and collets\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eHigh Speed Steel (HSS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOrigin\u003c\/th\u003e\n\u003ctd\u003eGermany\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShank Diameter\u003c\/th\u003e\n\u003ctd\u003e3\/32\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize Range\u003c\/th\u003e\n\u003ctd\u003e0.50mm – 1.00mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize Increment\u003c\/th\u003e\n\u003ctd\u003e0.10mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eKit Quantity\u003c\/th\u003e\n\u003ctd\u003e12 drills (2 each of 6 sizes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e128.684 – Busch HSS Twist Drill 0.50mm on 3\/32\" Shank (qty. 2)\u003c\/li\u003e\n\u003cli\u003e128.685 – Busch HSS Twist Drill 0.60mm on 3\/32\" Shank (qty. 2)\u003c\/li\u003e\n\u003cli\u003e128.686 – Busch HSS Twist Drill 0.70mm on 3\/32\" Shank (qty. 2)\u003c\/li\u003e\n\u003cli\u003e128.687 – Busch HSS Twist Drill 0.80mm on 3\/32\" Shank (qty. 2)\u003c\/li\u003e\n\u003cli\u003e128.688 – Busch HSS Twist Drill 0.90mm on 3\/32\" Shank (qty. 2)\u003c\/li\u003e\n\u003cli\u003e128.689 – Busch HSS Twist Drill 1.00mm on 3\/32\" Shank (qty. 2)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43582627414230,"sku":"128.699","price":78.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-203hss-high-speed-steel-twist-drill-kit-of-12-332-shanks-2-each-0-50mm-to-1-00mm-otto-frei.jpg?v=1719956938"},{"product_id":"busch-fig-411ct-twincut-concave-cone-cup-bur-kit-16-burs-0-80mm-2-30mm","title":"Busch Fig. 411CT Twincut Concave Cone Cup Bur Kit Set of 16 Burs 0.80mm-2.30mm","description":"\u003cp\u003eA cup bur finishes and rounds the tops of prongs during stone setting. This kit brings together the complete Busch Fig. 411CT series in a single set, one bur in each size across the full range from 0.80 mm to 2.30 mm.\u003c\/p\u003e\u003cp\u003eThe \u003cstrong\u003econcave cone shape\u003c\/strong\u003e of the Fig. 411CT distinguishes it from the traditional concave Fig. 411T. Where the 411T leaves a more rounded profile on prongs, the 411CT's sharply sloped concave cone geometry produces a more defined, crisply finished result. The \u003cstrong\u003etwincut (CT) blade geometry\u003c\/strong\u003e lets cut metal shavings clear freely from the bur, keeping the cutting action smooth and efficient on prong tips. The set is supplied in a plastic bur box with 48 holes for 3\/32 in shank burs.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eConcave cone shape for a sharply sloped, defined finish on prong tips\u003c\/li\u003e\n\u003cli\u003eTwincut (CT) blade geometry promotes efficient chip clearance during cutting\u003c\/li\u003e\n\u003cli\u003eCovers the complete Fig. 411CT size range, 0.80–2.30 mm\u003c\/li\u003e\n\u003cli\u003eSet of 16 burs, one in each size\u003c\/li\u003e\n\u003cli\u003eSupplied in a plastic bur box with 48 holes for 3\/32 in shank burs\u003c\/li\u003e\n\u003cli\u003eFor stone setting prong finishing and rounding work\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eThe \u003cem\u003eBusch Fig. 411T\u003c\/em\u003e, a cup bur with a traditional concave shape that leaves a softer, more rounded finish on prongs, is available separately.\u003c\/p\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43582807834838,"sku":"B118.411000","price":65.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-411ct-twincut-concave-cone-cup-bur-kit-set-of-16-burs-0-80mm-2-30mm-otto-frei.jpg?v=1719956848"},{"product_id":"busch-4203-4-groove-carbide-twist-drills-3-32-shank-0-70-1-60mm-kit-10","title":"Busch 4203 4 Groove Carbide Twist Drills on 3\/32\" Shanks .70mm-1.60mm - Kit of 10","description":"\u003cp\u003eThese Busch 4203 carbide twist drills feature a 4-groove design optimized for cutting softer organic materials such as coral and pearls. Mounted on 3\/32\" shanks, this kit provides ten drills ranging from 0.70mm to 1.60mm, offering a complete size progression for fine drilling work. The 4-groove geometry delivers outstanding service life when used correctly and within recommended operating parameters.\u003c\/p\u003e\n\n\u003cp\u003eFor best results and longest tool life, use these drills in a drill press. As with any drill, breakage can occur from excess leverage or canting. When drilling freehand, operate at \u003cstrong\u003e5,000–9,000 RPM\u003c\/strong\u003e; a starting guide hole is strongly recommended for freehand use. In a drill press, the recommended speed range is \u003cstrong\u003e8,000–14,000 RPM\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNot for use with glass, ceramics, or gemstones.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e4-groove carbide construction optimized for softer materials\u003c\/li\u003e\n\u003cli\u003eRecommended for drilling coral and pearls\u003c\/li\u003e\n\u003cli\u003eOutstanding service life with proper use\u003c\/li\u003e\n\u003cli\u003eMounted on standard 3\/32\" shanks\u003c\/li\u003e\n\u003cli\u003eComplete size range from 0.70mm to 1.60mm in 0.10mm increments\u003c\/li\u003e\n\u003cli\u003eSuitable for use in a drill press or freehand handpiece\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eSeries\u003c\/th\u003e\n\u003ctd\u003eBusch 4203\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGroove Type\u003c\/th\u003e\n\u003ctd\u003e4-groove\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eCarbide\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShank Size\u003c\/th\u003e\n\u003ctd\u003e3\/32\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize Range\u003c\/th\u003e\n\u003ctd\u003e0.70mm – 1.60mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Materials\u003c\/th\u003e\n\u003ctd\u003eCoral, pearls, and other soft organic materials\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNot Recommended For\u003c\/th\u003e\n\u003ctd\u003eGlass, ceramics, gemstones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFreehand Speed\u003c\/th\u003e\n\u003ctd\u003e5,000–9,000 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDrill Press Speed\u003c\/th\u003e\n\u003ctd\u003e8,000–14,000 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eKit Quantity\u003c\/th\u003e\n\u003ctd\u003e10 drills\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eB128.707 – \u003cstrong\u003e0.70mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eB128.708 – \u003cstrong\u003e0.80mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eB128.709 – \u003cstrong\u003e0.90mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eB128.710 – \u003cstrong\u003e1.00mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eB128.711 – \u003cstrong\u003e1.10mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eB128.712 – \u003cstrong\u003e1.20mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eB128.713 – \u003cstrong\u003e1.30mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eB128.714 – \u003cstrong\u003e1.40mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eB128.715 – \u003cstrong\u003e1.50mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eB128.716 – \u003cstrong\u003e1.60mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUsing a starting guide hole is strongly recommended when drilling freehand.\u003c\/li\u003e\n\u003cli\u003eBreakage may occur if excess lateral force or canting is applied during use.\u003c\/li\u003e\n\u003cli\u003eDrill press use is recommended for maximum tool longevity.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43582809637078,"sku":"B128.719","price":229.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-4203-4-groove-carbide-twist-drills-on-332-shanks-70mm-1-60mm-kit-of-10-otto-frei.jpg?v=1719956845"},{"product_id":"busch-fig-1au-carbide-round-burs-3-32-shank-kit-19-piece-0-50mm-2-30mm","title":"Busch Fig 1AU Carbide Round Burs 3\/32\" Shank - Complete Kit-Set of 19- 0.50mm to 2.30mm","description":"\u003cp\u003eCarbide burs are the longest-lasting burs available, outlasting both tungsten vanadium and high-speed burs. These Busch Fig 1AU Carbide Round Burs are engineered for use on the toughest metals — including platinum, titanium, and steel — and deliver exceptional service life even on standard gold alloys. Their durability makes them more cost-effective in the long run compared to conventional burs. Manufactured in Germany using state-of-the-art techniques, these round burs feature a powerful blade geometry typically reserved for steel tools. All shanks are 3\/32\".\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThese carbide round burs are used for the second step of pavé setting in hard metals.\u003c\/strong\u003e After using the Carbide Twist Drill 4205S to drill starter holes in the first step, use the appropriate size Fig 1AU Carbide Round Bur to enlarge the hole. This creates a secure mount for the roundest portion of the gem being set. The smallest diameter burs are also suited for cutting in difficult-to-reach corner areas and fine refinishing work.\u003c\/p\u003e\u003cp\u003eThis complete kit includes 19 burs ranging from 0.50mm to 2.30mm, covering the full range needed for professional pavé setting workflows.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCarbide construction for maximum durability — outlasts tungsten vanadium and high-speed steel burs\u003c\/li\u003e\n\u003cli\u003eSuitable for platinum, titanium, steel, and standard gold alloys\u003c\/li\u003e\n\u003cli\u003ePowerful blade geometry typically found only on steel tools\u003c\/li\u003e\n\u003cli\u003eIdeal for pavé setting: enlarges starter holes drilled in hard metals\u003c\/li\u003e\n\u003cli\u003eSmall diameter sizes suited for tight corners and fine refinishing\u003c\/li\u003e\n\u003cli\u003eManufactured in Germany\u003c\/li\u003e\n\u003cli\u003e3\/32\" shank fits standard flex shaft and rotary handpieces\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eBur Type\u003c\/th\u003e\n\u003ctd\u003eFig 1AU Carbide Round Bur\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eCarbide\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShank Size\u003c\/th\u003e\n\u003ctd\u003e3\/32\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Speed\u003c\/th\u003e\n\u003ctd\u003e2,000–10,000 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize Range\u003c\/th\u003e\n\u003ctd\u003e0.50mm–2.30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eKit Quantity\u003c\/th\u003e\n\u003ctd\u003e19 burs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCountry of Manufacture\u003c\/th\u003e\n\u003ctd\u003eGermany\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBAU118.175 — \u003cstrong\u003e0.50mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU118.176 — \u003cstrong\u003e0.60mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU118.177 — \u003cstrong\u003e0.70mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU118.178 — \u003cstrong\u003e0.80mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU118.179 — \u003cstrong\u003e0.90mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU118.180 — \u003cstrong\u003e1.00mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU118.181 — \u003cstrong\u003e1.10mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU118.182 — \u003cstrong\u003e1.20mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU118.183 — \u003cstrong\u003e1.30mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU118.184 — \u003cstrong\u003e1.40mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU118.185 — \u003cstrong\u003e1.50mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU118.186 — \u003cstrong\u003e1.60mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU118.187 — \u003cstrong\u003e1.70mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU118.188 — \u003cstrong\u003e1.80mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU118.189 — \u003cstrong\u003e1.90mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU118.190 — \u003cstrong\u003e2.00mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU118.191 — \u003cstrong\u003e2.10mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU118.192 — \u003cstrong\u003e2.20mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU118.193 — \u003cstrong\u003e2.30mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43582811177174,"sku":"BAU118.170","price":139.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-1au-carbide-round-burs-332-shank-complete-kit-set-of-19-0-50mm-to-2-30mm-otto-frei.jpg?v=1719956845"},{"product_id":"busch-fig-414au-carbide-90-hart-bur-kit-15-piece-0-90mm-2-30mm-3-32-shank","title":"Busch Fig 414AU Carbide 90 Hart Bur-3\/32\" Shanks-Kit of 15- 0.90mm to 2.30mm","description":"\u003cp\u003eCut clean, consistent seats in prongs for stone setting. The Busch Fig 414AU Carbide 90° Hart Bur Kit delivers a complete range of 15 sizes in a single plastic box, spanning 0.90mm to 2.30mm in 0.10mm increments, so bench jewelers and stone setters have the right seat size on hand for a wide variety of prong work.\u003c\/p\u003e\u003cp\u003eCarbide construction makes these the longest-lasting burs in the Busch lineup, outlasting both tungsten vanadium and high-speed steel burs. Their advanced blade geometry, typically reserved for steel tooling, is engineered to power through the toughest metals, including platinum, titanium, and steel, while also delivering exceptional service life on standard gold alloys. The result is a lower cost per use compared to conventional burs.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e90° hart bur angle optimized for cutting prong seats\u003c\/li\u003e\n\u003cli\u003eCarbide construction outlasts tungsten vanadium and high-speed steel burs\u003c\/li\u003e\n\u003cli\u003eAdvanced blade geometry for powerful, clean cutting action\u003c\/li\u003e\n\u003cli\u003eSuitable for platinum, titanium, steel, and standard gold alloys\u003c\/li\u003e\n\u003cli\u003e15 sizes from 0.90mm to 2.30mm in 0.10mm increments\u003c\/li\u003e\n\u003cli\u003eSupplied in a plastic box for organized bench storage\u003c\/li\u003e\n\u003cli\u003eMade in Germany\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eAll shanks measure 3\/32\", for broad compatibility with standard flex-shaft handpieces and rotary tools.\u003c\/p\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eIndividual burs from this kit are also available by the piece. Related carbide bur kits include the Fig 446AU 70° Hart Bur set (BAU118.600) and the Fig 413AU Traditional Setting Bur set (BAU118.835).\u003c\/p\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43582812225750,"sku":"BAU118.500","price":298.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-414au-carbide-90-hart-bur-332-shanks-kit-of-15-0-90mm-to-2-30mm-otto-frei.jpg?v=1719956845"},{"product_id":"busch-fig-446au-carbide-70-degree-hart-burs-3-32-shank-0-90-2-30mm-set-15","title":"Busch Fig 446AU Carbide 70 Degree Hart Burs on 3\/32\" Shanks-Set of 15 .90mm-2.30mm","description":"\u003cp\u003eCut accurate seats in prongs so stones sit level and secure. The Busch Fig 446AU Carbide 70 Degree Hart Burs are precision-engineered for exactly that job, and this complete set includes 15 burs on 3\/32\" shanks in a plastic storage box, covering sizes from 0.90mm through 2.30mm in 0.10mm increments, so jewelers and stone setters have the full range needed for consistent prong seat work.\u003c\/p\u003e\u003cp\u003eCarbide burs are the longest-lasting burs available, outlasting both tungsten vanadium and high-speed steel burs. They perform exceptionally on the toughest metals, including platinum, titanium, and steel, while also delivering dramatically extended service life on standard gold alloys. Their advanced blade geometry, typically found only on steel tools, is achieved through state-of-the-art manufacturing in Germany.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e70-degree hart bur geometry engineered for precise prong seat cutting\u003c\/li\u003e\n\u003cli\u003eCarbide construction outlasts tungsten vanadium and high-speed steel burs\u003c\/li\u003e\n\u003cli\u003eSuitable for platinum, titanium, steel, and all standard gold alloys\u003c\/li\u003e\n\u003cli\u003eAdvanced blade geometry normally reserved for steel tooling\u003c\/li\u003e\n\u003cli\u003e3\/32\" shanks throughout the set\u003c\/li\u003e\n\u003cli\u003eManufactured in Germany using state-of-the-art production techniques\u003c\/li\u003e\n\u003cli\u003eComplete set of 15 burs stored in a plastic box for organized access\u003c\/li\u003e\n\u003cli\u003eAlso available individually by the piece\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eRelated Busch carbide bur sets are also available: Fig 414AU 90-degree hart burs (part number BAU118.500) and Fig 413AU traditional setting burs (part number BAU118.835). All individual sizes from this kit are also sold separately.\u003c\/p\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43582813634774,"sku":"BAU118.600","price":298.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-446au-carbide-70-degree-hart-burs-on-332-shanks-set-of-15-90mm-2-30mm-otto-frei.jpg?v=1719956845"},{"product_id":"busch-fig-4205s-short-carbide-twist-drills-3-32-shank-0-70-1-00mm-kit-4","title":"Busch Fig 4205S 2 Groove Short Carbide Twist Drill on 3\/32\" Shanks .70mm-1.00mm  - Kit of 4","description":"\u003cp\u003e\u003cstrong\u003eRecommended for Pavé Work on Hard Metals\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese Busch Fig 4205S short carbide twist drills are engineered for one precise application: drilling accurate holes in hard metals for pavé diamond setting. The short length is intentional — pavé holes are relatively shallow, and longer drills are prone to breaking under torsional stress. The 2-groove design actively expels material from the hole during drilling, extending drill life and maintaining accuracy.\u003c\/p\u003e\u003cp\u003eDeveloped through a partnership between Busch of Germany and the world's finest micro-diamond setters, these drills are the trusted solution for professionals who set stones for leading jewelry houses. Use them on hard metals including platinum, high-karat white gold alloys, titanium, and steel, as well as gold, silver, and other alloys.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eShort-length design reduces torsional stress and minimizes breakage during shallow pavé hole drilling\u003c\/li\u003e\n\u003cli\u003e2-groove geometry expels swarf from the hole to extend drill life and maintain clean, precise results\u003c\/li\u003e\n\u003cli\u003eSolid carbide construction handles hard metals including platinum, titanium, and steel\u003c\/li\u003e\n\u003cli\u003eConsistent 3\/32\" shank fits standard flex shaft handpieces and drill chucks\u003c\/li\u003e\n\u003cli\u003eSuitable for gold, silver, platinum, high-karat white gold alloys, titanium, and steel\u003c\/li\u003e\n\u003cli\u003eNot for use with glass, ceramics, or gemstones\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eFigure\u003c\/th\u003e\n\u003ctd\u003eBusch Fig 4205S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConstruction\u003c\/th\u003e\n\u003ctd\u003eCarbide\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShank Diameter\u003c\/th\u003e\n\u003ctd\u003e3\/32\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGroove Design\u003c\/th\u003e\n\u003ctd\u003e2-groove\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Speed\u003c\/th\u003e\n\u003ctd\u003e3,000–5,000 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eKit Quantity\u003c\/th\u003e\n\u003ctd\u003e4 drills per kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003ePavé diamond setting on hard metals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cp\u003eThis kit of 4 includes one drill in each of the following sizes:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBAU128.407 — \u003cstrong\u003e0.70mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU128.408 — \u003cstrong\u003e0.80mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU128.409 — \u003cstrong\u003e0.90mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU128.410 — \u003cstrong\u003e1.00mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eThese carbide twist drills are also available for purchase individually by part number. Not recommended for use on glass, ceramics, or gemstones.\u003c\/p\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43582815076566,"sku":"BAU128.400","price":76.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-4205s-2-groove-short-carbide-twist-drill-on-332-shanks-70mm-1-00mm-kit-of-4-otto-frei.jpg?v=1719956845"},{"product_id":"busch-fig-152-flame-finishing-bur-kit-5-piece-1mm-2-30mm","title":"Busch Fig 152 Flame Finishing Bur Kit 5 Pieces. 1.0mm To 2.30mm","description":"\u003cp\u003eFlame finishing burs smooth and refine precious metal, cutting cleanly with no chatter or drag. This Busch Fig 152 Flame Finishing Bur Kit delivers five precision-ground tungsten vanadium flame shape finishing burs in five sizes from 1.00mm to 2.30mm, supplied in a plastic bur box.\u003c\/p\u003e\n\u003cp\u003eBusch burs are among the most widely used in the jewelry industry, machine made to ultra-high precision tolerances that make each bur uniformly perfect. All five burs are mounted on 3\/32\" shanks, which makes them an everyday tool for the professional jeweler or metalsmith.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBusch Fig 152 flame shape finishing burs in tungsten vanadium steel\u003c\/li\u003e\n\u003cli\u003eMachine made to ultra-high precision tolerances for uniform, consistent performance\u003c\/li\u003e\n\u003cli\u003eCuts precious metal smoothly and cleanly with no chatter or drag\u003c\/li\u003e\n\u003cli\u003eFive burs covering 1.00mm – 2.30mm: 1.00, 1.20, 1.40, 1.80 and 2.30mm\u003c\/li\u003e\n\u003cli\u003e3\/32\" shanks throughout\u003c\/li\u003e\n\u003cli\u003eIncludes a plastic bur box to keep the burs organized and protected\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe 3\/32\" shank fits standard flex shaft and rotary tool handpieces.\u003c\/li\u003e\n\u003cli\u003eThe included bur box holds 3\/32\" shank burs.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43582818451670,"sku":"118.015","price":15.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-152-flame-finishing-bur-kit-5-pieces-1-0mm-to-2-30mm-otto-frei.jpg?v=1719956843"},{"product_id":"busch-fig-411ccc-clean-cut-concave-cup-bur-kit-20-piece-1-00-2-30mm","title":"Busch Fig. 411CCC Clean Cut Concave Cup Kit of 20 Burs 1.00mm-2.30mm","description":"\u003cp\u003eA cup bur rounds and finishes the tip of a prong after a stone is set. \u003cstrong\u003eBusch Fig. 411CCC clean cut concave cup burs\u003c\/strong\u003e are among the most precise jeweler's burs available, engineered to ultra-high tolerances from tungsten vanadium steel, and this kit spans ten sizes from 1.00 mm to 2.30 mm with two burs of each size.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCCC\u003c\/strong\u003e stands for \u003cstrong\u003eC\u003c\/strong\u003elean \u003cstrong\u003eC\u003c\/strong\u003eut \u003cstrong\u003eC\u003c\/strong\u003eoncave. \u003cstrong\u003eClean cut\u003c\/strong\u003e means the cutting edges are open, so metal shavings clear from inside the bur without marring the surface being cut. \u003cstrong\u003eConcave\u003c\/strong\u003e is the traditional cup shape that leaves a rounded, finished top on the prong, which is what prong finishing and setting work calls for. The kit is supplied in a plastic bur box with 48 holes for 3\/32 in shank burs.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTungsten vanadium steel machined to ultra-high precision tolerances\u003c\/li\u003e\n\u003cli\u003eClean cut geometry keeps cutting edges open for efficient chip expulsion\u003c\/li\u003e\n\u003cli\u003eConcave cup profile produces a smooth, rounded prong top\u003c\/li\u003e\n\u003cli\u003eCovers 10 sizes from 1.00 mm through 2.30 mm\u003c\/li\u003e\n\u003cli\u003eTwo burs of each size, 20 burs total\u003c\/li\u003e\n\u003cli\u003eSupplied in a plastic bur box with 48 holes for 3\/32 in shank burs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eA concave cone shape is available separately in the \u003cem\u003eBusch Fig. 411C\u003c\/em\u003e and \u003cem\u003eBusch Fig. 411CT\u003c\/em\u003e bur styles. Individual Fig. 411CCC burs in these sizes are also available separately.\u003c\/p\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43582856233174,"sku":"118.029","price":74.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-411ccc-clean-cut-concave-cup-kit-of-20-burs-1-00mm-2-30mm-otto-frei.jpg?v=1719956830"},{"product_id":"busch-fig-415-knife-edge-bur-kit-11-piece-1-0-2-0mm","title":"Busch Fig. 415 Knife Edge Bur Kit of 11 - 1.0mm - 2.0mm","description":"\u003cp\u003eCut narrow, clean seats and bright-cut lines in precious metal for stone setting work. The Busch Fig. 415 Knife Edge Bur Kit contains one each of 11 burs ranging from 1.0mm to 2.0mm, packaged together in a plastic storage container, giving stone setters a complete progression of sizes in a single purchase instead of sourcing each bur individually.\u003c\/p\u003e\u003cp\u003eBusch Fig. 415 burs, also known as Lens burs, feature a \u003cstrong\u003e55-degree angle\u003c\/strong\u003e that produces narrow, precise cuts in precious metals. This geometry suits stone setting work where controlled material removal and clean seat edges are critical. The burs are manufactured from \u003cstrong\u003etungsten vanadium steel\u003c\/strong\u003e to ultra-high precision tolerances, for consistent performance and long tool life.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eKit of 11 burs covering sizes 1.0mm through 2.0mm in 0.1mm increments\u003c\/li\u003e\n\u003cli\u003eFig. 415 knife edge (lens) profile with 55-degree cutting angle\u003c\/li\u003e\n\u003cli\u003eDesigned for narrow, precise cuts in precious metals, ideal for stone setting\u003c\/li\u003e\n\u003cli\u003eMade from tungsten vanadium steel to ultra-high precision tolerances\u003c\/li\u003e\n\u003cli\u003ePackaged in a plastic storage container to keep burs organized\u003c\/li\u003e\n\u003cli\u003eAlso referred to as Busch 415 Lens burs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43582861213910,"sku":"118.030","price":39.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-415-knife-edge-bur-kit-of-11-1-0mm-2-0mm-otto-frei.jpg?v=1719956830"},{"product_id":"busch-fig-413-setting-bur-kit-21-piece-1-00mm-8-00mm","title":"Busch Fig 413 Setting Bur Kit- Complete Kit of 21-1.00mm to 8.00mm","description":"\u003cp\u003eA setting bur cuts the seat that holds a stone securely, and this kit covers every seat size a busy bench is likely to need. The Busch Fig 413 Setting Bur Kit is the complete assortment, spanning 21 sizes from 1.00 mm through 8.00 mm, which gives jewelers and stone setters instant access to the whole range instead of sourcing burs one at a time.\u003c\/p\u003e\u003cp\u003eThe Busch Fig 413 burs are crafted from Busch tungsten vanadium steel, produced with modern manufacturing equipment combined with German steel hardening expertise for cutting performance, durability, and consistency. The 6.00 mm size is a Swiss Fig. Q setting bur. Every bur in the kit runs on a 3\/32\" shank for broad compatibility with standard handpieces, and the set is presented in a 36 hole wood box for 3\/32\" shank burs measuring 5\" wide by 3\" deep by 2-5\/8\" high.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eComplete set of 21 setting bur sizes from 1.00 mm to 8.00 mm\u003c\/li\u003e\n\u003cli\u003eBusch Fig 413 setting burs made from Busch tungsten vanadium steel\u003c\/li\u003e\n\u003cli\u003eProduced with modern manufacturing equipment and German steel hardening techniques\u003c\/li\u003e\n\u003cli\u003eIncludes a Swiss Fig. Q setting bur in 6.00 mm\u003c\/li\u003e\n\u003cli\u003e3\/32\" diameter shanks for broad compatibility with standard handpieces\u003c\/li\u003e\n\u003cli\u003eStored and presented in a wood box for organization and protection\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43583291785430,"sku":"B118.719","price":140.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-413-setting-bur-kit-complete-kit-of-21-1-00mm-to-8-00mm-otto-frei.jpg?v=1719956700"},{"product_id":"busch-fig-105-023-round-allport-bur-2-30mm","title":"Busch Fig. 105-023 Allport Burs 2.30mm","description":"\u003cp\u003eAn Allport bur cuts and shapes metal in tight, controlled passes, the kind of work a bench jeweler does when opening and refining detail. The Busch Fig. 105-023 Allport Bur is a steel rotary bur with a 2.30mm cutting diameter and a 64.5mm shank length, sized for precision work in jewelry making and metalsmithing, and built for consistent, controlled material removal.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eRound Allport bur profile for precise cutting and shaping\u003c\/li\u003e\n\u003cli\u003eSteel construction for durability and consistent performance\u003c\/li\u003e\n\u003cli\u003e2.30mm cutting diameter suited to fine detail work\u003c\/li\u003e\n\u003cli\u003e64.5mm shank length for secure tool holding\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43583618285782,"sku":"B118.593","price":10.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-105-023-allport-burs-2-30mm-otto-frei.jpg?v=1719956589"},{"product_id":"busch-fig-105-031-round-allport-bur-3-10mm","title":"Busch Fig. 105-031 Allport Burs 3.10mm","description":"\u003cp\u003eThe Busch Fig. 105-031 Allport Bur is a steel round bur designed for professional jewelers and metalsmiths requiring precise, controlled cutting. With a 3.10mm cutting diameter and a 64.5mm shank length, this bur is built to the exacting standards Busch is known for in the bench tool industry.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRound allport bur profile for smooth, accurate seat cutting\u003c\/li\u003e\n\u003cli\u003e3.10mm cutting diameter for fine, detail-oriented work\u003c\/li\u003e\n\u003cli\u003eSteel construction for durability and consistent performance\u003c\/li\u003e\n\u003cli\u003e64.5mm shank length provides secure grip in standard bur holders\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eFigure\u003c\/th\u003e\n\u003ctd\u003e105-031\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eAllport Bur\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProfile\u003c\/th\u003e\n\u003ctd\u003eRound\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eSteel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCutting Diameter\u003c\/th\u003e\n\u003ctd\u003e3.10mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShank Length\u003c\/th\u003e\n\u003ctd\u003e64.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43583620022486,"sku":"B118.594","price":12.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-105-031-allport-burs-3-10mm-otto-frei.jpg?v=1719956589"},{"product_id":"busch-fig-105-040-round-allport-bur-4mm","title":"Busch Fig. 105-040 Allport Burs 4.00mm","description":"\u003cp\u003eAn Allport bur cuts and shapes metal in controlled passes where accuracy matters more than speed. The Busch Fig. 105-040 Allport Bur is a precision steel bur with a 4.00mm cutting diameter and a 64.5mm shank length, made for professional jewelers and metalsmiths who need consistent, reliable cutting performance in detailed metalwork. Busch burs are a trusted standard in professional bench work, and this bur delivers the quality expected from that lineage.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eRound Allport bur profile for precise cutting and shaping\u003c\/li\u003e\n\u003cli\u003e4.00mm cutting diameter\u003c\/li\u003e\n\u003cli\u003e64.5mm shank length for secure tool holding\u003c\/li\u003e\n\u003cli\u003eSteel construction for durability and consistent performance\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43583621202134,"sku":"B118.595","price":16.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-105-040-allport-burs-4-00mm-otto-frei.jpg?v=1719956589"},{"product_id":"busch-fig-413-setting-bur-kit-17-pieces-1-00mm-5-00mm","title":"Busch Fig 413 Setting Bur Kit 17 Pieces. 1.00mm to 5.00mm","description":"\u003cp\u003eA setting bur cuts the seat that holds a stone securely, and the Busch Fig 413 is the setting bur profile bench jewelers reach for most often. This kit brings together 17 German-made tungsten vanadium setting burs covering 1.00 mm through 5.00 mm, so the size the job calls for is already at the bench.\u003c\/p\u003e\u003cp\u003eBusch manufactures these burs to ultra-high precision tolerances using advanced machinery and German steel hardening expertise. They cut precious metal smoothly and cleanly with no chatter or drag, and every bur in the set is uniformly perfect, which makes them dependable for repetitive stone setting across a wide range of stone diameters. All 17 burs run on a 3\/32\" shank for standard flex shaft handpieces and rotary tools, and the set arrives in a plastic bur box that keeps them organized and protected.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBusch Fig 413 setting burs, the most popular setting bur style in the jewelry industry\u003c\/li\u003e\n\u003cli\u003eGerman-made tungsten vanadium steel construction for durability and consistent cutting performance\u003c\/li\u003e\n\u003cli\u003eMachine-made to ultra-high precision tolerances, uniformly perfect from bur to bur\u003c\/li\u003e\n\u003cli\u003eCuts precious metal smoothly and cleanly with no chatter or drag\u003c\/li\u003e\n\u003cli\u003e17-piece set covering 1.00 mm through 5.00 mm\u003c\/li\u003e\n\u003cli\u003e3\/32\" diameter shanks for use with standard flex shaft handpieces and rotary tools\u003c\/li\u003e\n\u003cli\u003eIncludes a plastic bur box to keep the burs organized at the bench\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43583622414550,"sku":"118.004BUSCH","price":95.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-413-setting-bur-kit-17-pieces-1-00mm-to-5-00mm-otto-frei.jpg?v=1719956587"},{"product_id":"busch-fig-77-tungsten-vanadium-twist-drills-kit-12-05mm-160mm-3-32-shank","title":"Busch Fig 77 Tungsten Vanadium Twist Drills Kit of 12- On 3\/32\" Shanks-0.5mm - 1.60mm","description":"\u003cp\u003eBusch is the most famous name in jewelers' burs and drills. These Fig 77 tungsten vanadium steel twist drills are manufactured to ultra-high precision tolerances, making them a reliable choice for professional jewelers and metalsmiths. Mounted on 3\/32\" (2.35mm) shanks, they are compatible with standard flex-shaft handpieces and drill chucks for fast, easy bit changes. This assortment spans 0.5mm to 1.60mm, covering the most frequently needed drilling sizes in a single convenient kit.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTungsten vanadium steel construction for durability and precision\u003c\/li\u003e\n\u003cli\u003eManufactured to ultra-high precision tolerances\u003c\/li\u003e\n\u003cli\u003eMounted on 3\/32\" (2.35mm) shanks for compatibility with standard handpieces\u003c\/li\u003e\n\u003cli\u003eKit of 12 drills spanning 0.5mm – 1.60mm in graduated sizes\u003c\/li\u003e\n\u003cli\u003eFig 77 twist drill geometry for clean, accurate holes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eShank Diameter\u003c\/th\u003e\n\u003ctd\u003e3\/32\" (2.35mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDrill Material\u003c\/th\u003e\n\u003ctd\u003eTungsten vanadium steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFigure\u003c\/th\u003e\n\u003ctd\u003eFig 77\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize Range\u003c\/th\u003e\n\u003ctd\u003e0.5mm – 1.60mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eKit Quantity\u003c\/th\u003e\n\u003ctd\u003e12 drills\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cp\u003eThis kit includes one each of the following Busch twist drills:\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eDrill Diameter\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB128.584\u003c\/td\u003e\n\u003ctd\u003e0.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB128.585\u003c\/td\u003e\n\u003ctd\u003e0.6mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB128.586\u003c\/td\u003e\n\u003ctd\u003e0.7mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB128.587\u003c\/td\u003e\n\u003ctd\u003e0.8mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB128.588\u003c\/td\u003e\n\u003ctd\u003e0.9mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB128.589\u003c\/td\u003e\n\u003ctd\u003e1.0mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB128.590\u003c\/td\u003e\n\u003ctd\u003e1.2mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB128.591\u003c\/td\u003e\n\u003ctd\u003e1.4mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB128.592\u003c\/td\u003e\n\u003ctd\u003e1.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB128.593\u003c\/td\u003e\n\u003ctd\u003e1.6mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB128.601\u003c\/td\u003e\n\u003ctd\u003e1.1mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB128.602\u003c\/td\u003e\n\u003ctd\u003e1.3mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43583679955158,"sku":"B128.584KIT","price":35.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-77-tungsten-vanadium-twist-drills-kit-of-12-on-332-shanks-0-5mm-1-60mm-otto-frei.jpg?v=1719956550"},{"product_id":"busch-16s12-fig-6-bud-bur-kit-12-0-60-2-50mm","title":"Busch 16S12 Fig 6 Bud Bur Kit of 12 - 0.60 mm to 2.50 mm","description":"\u003cp\u003eThis kit answers work that calls for progressively sized bud burs, giving you a graduated range from 0.60 mm to 2.50 mm on 3\/32\" shanks without sourcing individual pieces. The Busch 16S12 Fig. 6 Bud Bur Kit delivers a factory-assembled set of 12 genuine Busch bud burs across that range. Busch is among the most respected names in jewelers' burs, and these Fig. 6 bud burs uphold that reputation with ultra-high precision tolerances and consistent performance across every size in the set.\u003c\/p\u003e\n\u003cp\u003eCrafted from tungsten vanadium steel, each bur in this kit is built for the exacting demands of professional jewelers and metalsmiths.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Busch Fig. 6 bud burs in a factory-assembled kit\u003c\/li\u003e\n\u003cli\u003eTungsten vanadium steel construction for precision and durability\u003c\/li\u003e\n\u003cli\u003eManufactured to ultra-high precision tolerances\u003c\/li\u003e\n\u003cli\u003e3\/32\" shank fits standard flex shaft handpieces and rotary tools\u003c\/li\u003e\n\u003cli\u003eConsecutive size range from 0.60 mm to 2.50 mm, one of each size included\u003c\/li\u003e\n\u003cli\u003e12 burs per kit\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43584008487126,"sku":"B118.261KIT","price":25.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-16s12-fig-6-bud-bur-kit-of-12-0-60-mm-to-2-50-mm-otto-frei.jpg?v=1719956448"},{"product_id":"busch-fig-77b-concave-cup-bur-kit-12-0-80mm-1-90mm","title":"Busch 1772SS12 Fig 77B Concave Cup Bur Kit of 12 - 0.80mm to 1.90mm","description":"\u003cp\u003eA cup bur rounds and smooths the tips of prongs after setting, which is the primary job cup burs perform in jewelry work. Busch burs are the most trusted name in jewelers' burs, and the \u003cstrong\u003eBusch 1772SS12 Fig. 77B Concave Cup Bur Kit of 12\u003c\/strong\u003e delivers a carefully selected range of the most popular sizes in one convenient set, so the right size is on hand for a wide variety of settings and stone sizes.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eConcave\u003c\/strong\u003e refers to the traditional cup bur shape, which leaves a smooth, rounded top on a prong after finishing. This classic profile has been the standard for jewelers for generations, providing clean, consistent results. Note that a separate concave cone shape is also available from Busch in their Fig. 411C and Fig. 411CT cup burs.\u003c\/p\u003e\u003cp\u003eEach bur in this kit is crafted from \u003cstrong\u003etungsten vanadium steel\u003c\/strong\u003e and manufactured in Germany to ultra-high precision tolerances, ensuring reliable performance and long service life across professional bench applications.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eClassic Fig. 77B concave cup bur profile, the industry-standard shape for prong finishing\u003c\/li\u003e\n\u003cli\u003eKit of 12 burs, one each of the most popular sizes from 0.80mm to 1.90mm\u003c\/li\u003e\n\u003cli\u003eConcave shape produces a smooth, rounded prong tip\u003c\/li\u003e\n\u003cli\u003eMade from tungsten vanadium steel for durability and precision cutting\u003c\/li\u003e\n\u003cli\u003eManufactured in Germany to ultra-high precision tolerances\u003c\/li\u003e\n\u003cli\u003eTrusted by professional jewelers for generations\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eThe \u003cem\u003econcave\u003c\/em\u003e cup bur shape (Fig. 77B) leaves a rounded top on prong tips. For a concave cone profile, see Busch Fig. 411C and Fig. 411CT cup burs, available separately.\u003c\/p\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43584044335318,"sku":"B118.399KIT","price":49.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-1772ss12-fig-77b-concave-cup-bur-kit-of-12-0-80mm-to-1-90mm-otto-frei.jpg?v=1719956439"},{"product_id":"busch-fig-411t-twincut-concave-cup-bur-kit-12-piece-0-80mm-2-00mm","title":"Busch Fig 411T Twincut Concave Cup Bur Kit of 12-0.80mm to 2.00mm","description":"\u003cp\u003eA cup bur rounds the tip of a prong cleanly and consistently, the number one application for cup burs in jewelry work. \u003cstrong\u003eBusch Fig. 411T twincut concave cup burs\u003c\/strong\u003e are precision engineered in Germany from tungsten vanadium steel to ultra-high tolerances, and this kit of 12 brings together one bur in each size of the full 411T range, from 0.80 mm to 2.00 mm.\u003c\/p\u003e\u003cp\u003eThe \u003cstrong\u003etwincut\u003c\/strong\u003e blade geometry is the defining feature of the Fig. 411T series, delivering a smooth, controlled cutting action. The \u003cstrong\u003econcave\u003c\/strong\u003e cup shape, the traditional form jewelers have relied on for generations, rounds the tip of a prong cleanly and produces a finished look that protects stones. The kit is supplied in a plastic bur box with 48 holes for 3\/32 in shank burs.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTwincut blade geometry for smooth, efficient cutting\u003c\/li\u003e\n\u003cli\u003eConcave cup shape rounds prong tips to a traditional, polished finish\u003c\/li\u003e\n\u003cli\u003eMade from tungsten vanadium steel\u003c\/li\u003e\n\u003cli\u003eManufactured in Germany to ultra-high precision tolerances\u003c\/li\u003e\n\u003cli\u003e12 burs spanning 0.80–2.00 mm, one in each size\u003c\/li\u003e\n\u003cli\u003ePrimary use: finishing the tips of prongs in prong-set jewelry\u003c\/li\u003e\n\u003cli\u003eSupplied in a plastic bur box with 48 holes for 3\/32 in shank burs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eThe 1.90 mm size is not part of this kit. Busch also offers a concave cone shape in the \u003cem\u003eFig. 411C\u003c\/em\u003e and \u003cem\u003eFig. 411CT\u003c\/em\u003e cup burs, and individual sizes are available separately.\u003c\/p\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43584045580502,"sku":"B118.463KIT","price":59.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-411t-twincut-concave-cup-bur-kit-of-12-0-80mm-to-2-00mm-otto-frei.jpg?v=1719956437"},{"product_id":"jewelers-master-gia-student-bur-kit","title":"Jewelers Master GIA Student Bur Kit","description":"\u003cp\u003eThis kit covers the drilling, shaping, and stone setting steps of everyday bench work with one coordinated set of burs and twist drills. Busch Burs supplies the four assortments: Fig 77 tungsten vanadium twist drills on 3\/32\" shanks, a mixed shapes assortment, Fig 1 round ball burs, and Fig 413 setting burs, all packed in a plastic storage box with adjustable compartments.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFour coordinated Busch Burs assortments covering drilling, shaping, and stone setting\u003c\/li\u003e\n\u003cli\u003eFig 77 tungsten vanadium twist drills, 0.7mm–1.2mm, on 3\/32\" shanks\u003c\/li\u003e\n\u003cli\u003eFig 1 round ball burs, 0.5mm–4.0mm\u003c\/li\u003e\n\u003cli\u003eFig 413 setting burs, 2.00mm–6.00mm\u003c\/li\u003e\n\u003cli\u003eMixed shapes bur assortment for general shaping work\u003c\/li\u003e\n\u003cli\u003eWidely used by GIA students and suited to student training through journeyman level projects\u003c\/li\u003e\n\u003cli\u003ePlastic storage box with adjustable compartments keeps the set organized at the bench\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cp\u003eThe assortment is structured to cover the common bur profiles used in jewelry fabrication and stone setting, and the adjustable box leaves room for later additions such as polishing wheels and further burs.\u003c\/p\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43584415727830,"sku":"138.891","price":199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/jewelers-master-gia-student-bur-kit-otto-frei-1.jpg?v=1719956205"},{"product_id":"busch-fig-77-tungsten-vanadium-twist-drill-kit-15pc-07-12mm-3-32-shank","title":"Busch Fig 77 Tungsten Vanadium Twist Drill Kit of 15 On 3\/32\" Shanks-0.7mm-1.2mm","description":"\u003cp\u003eThis assortment of 15 genuine Busch Fig 77 tungsten vanadium steel twist drills includes multiple drills of the most popular sizes that jewelers use, spanning 0.7mm to 1.2mm. Busch Fig 77 twist drills are made to ultra-high precision tolerances and mounted on 3\/32\" (2.35mm) shanks for easy, secure drill changes in standard flex-shaft handpieces and drill presses. This kit is part of the GIA Graduate Jeweler tool kit.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Busch Fig 77 twist drills in tungsten vanadium steel\u003c\/li\u003e\n\u003cli\u003eUltra-high precision tolerances for accurate, clean drilling\u003c\/li\u003e\n\u003cli\u003eMounted on 3\/32\" (2.35mm) shanks for easy drill changes\u003c\/li\u003e\n\u003cli\u003eAssortment of 15 drills covering the most popular jeweler sizes\u003c\/li\u003e\n\u003cli\u003eSizes range from 0.7mm to 1.2mm\u003c\/li\u003e\n\u003cli\u003ePart of the GIA Graduate Jeweler tool kit\u003c\/li\u003e\n\u003cli\u003eStored in a round plastic bur box (part #119.248)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eDrill Type\u003c\/th\u003e\n\u003ctd\u003eFig 77 Twist Drill\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eTungsten vanadium steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShank Size\u003c\/th\u003e\n\u003ctd\u003e3\/32\" (2.35mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize Range\u003c\/th\u003e\n\u003ctd\u003e0.7mm–1.2mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eKit Quantity\u003c\/th\u003e\n\u003ctd\u003e15 drills\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStorage\u003c\/th\u003e\n\u003ctd\u003eRound plastic bur box (part #119.248)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e15 Busch Fig 77 tungsten vanadium twist drills (0.7mm–1.2mm)\u003c\/li\u003e\n\u003cli\u003eRound plastic bur box (part #119.248)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cp\u003eThe individual drill sizes included in this kit are listed below for reference. Multiple drills of the most popular sizes are included across the 0.7mm–1.2mm range.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB128.586\u003c\/td\u003e\n\u003ctd\u003e0.7mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB128.587\u003c\/td\u003e\n\u003ctd\u003e0.8mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB128.589\u003c\/td\u003e\n\u003ctd\u003e1.0mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB128.590\u003c\/td\u003e\n\u003ctd\u003e1.2mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43584445972694,"sku":"B128.8911","price":49.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-77-tungsten-vanadium-twist-drill-kit-of-15-on-332-shanks-0-7mm-1-2mm-otto-frei-1.jpg?v=1719956184"},{"product_id":"busch-mixed-shapes-student-bur-kit-23-pieces-gia","title":"Busch Mixed Shapes Student Bur Kit of 23 Pieces","description":"\u003cp\u003eCut seats, shape metal and finish detail work at the bench with one of each of the most popular bur shapes and sizes. Busch burs are the most trusted name in jewelers' burs, known for precision and durability, and \u003cstrong\u003ethis Busch Mixed Shapes Student Bur Kit of 23 pieces brings those shapes together in a single, budget-friendly starter set.\u003c\/strong\u003e The kit is part of the GIA graduate jeweler program, with burs selected by GIA expert instructors to align with the GIA curriculum, making it a practical choice for students and emerging jewelers building a first professional toolkit.\u003c\/p\u003e\u003cp\u003eShapes represented include Fig 256 Krause, Fig 6 Bud, Fig 77B Cup, Fig 15 Cylinder Square Plain Cut, and Fig 156C Hart 90 Degree burs spanning a range of sizes. All burs are tungsten vanadium steel on 3\/32\" (2.35mm) shanks for easy, universal drill changes, and the kit ships in a round plastic bur box for storage and organization.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCurated by GIA instructors for use with the GIA graduate jeweler curriculum\u003c\/li\u003e\n\u003cli\u003eTungsten vanadium steel construction\u003c\/li\u003e\n\u003cli\u003eFive bur shapes: Fig 256 Krause, Fig 6 Bud, Fig 77B Cup, Fig 15 Cylinder Square Plain Cut, and Fig 156C Hart 90 Degree\u003c\/li\u003e\n\u003cli\u003eAll burs mounted on 3\/32\" (2.35mm) shanks\u003c\/li\u003e\n\u003cli\u003e23-piece count provides broad shape and size coverage in a single purchase\u003c\/li\u003e\n\u003cli\u003eIncludes a round plastic bur storage box\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eThe 3\/32\" (2.35mm) shanks fit standard flex shaft and rotary handpieces, so burs swap without changing collets or chucks.\u003c\/p\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43584446464214,"sku":"B118.8912","price":74.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-mixed-shapes-student-bur-kit-of-23-pieces-otto-frei-1.jpg?v=1726695749"},{"product_id":"busch-fig-1-round-ball-bur-kit-20-pieces-0-5mm-to-4-0mm","title":"Busch Fig 1 Round Ball Bur Kit of 19 Pieces-0.5mm to 4.0mm","description":"\u003cp\u003eRound ball burs do the everyday work at the bench: opening and enlarging drilled holes, cutting seats, and shaping metal wherever a rounded cut is wanted. This Busch Fig 1 Round Ball Bur Kit gathers the most popular ball bur sizes, from 0.50mm through 4.00mm, with the three highest-demand sizes supplied in duplicate, which makes it both a strong starter set and a way to sample Busch quality across the size range.\u003c\/p\u003e\n\u003cp\u003eBusch burs are the most trusted name in jewelers' burs, known for consistent quality and precision across a wide range of shapes and sizes. Every bur here is genuine Busch tungsten vanadium steel on a 3\/32\" (2.35mm) shank for quick tool changes. The kit is part of the GIA graduate jeweler program, with sizes chosen by GIA's expert instructors to support their curriculum, and it is stored in a plastic bur box drilled with 48 holes for 3\/32\" shank burs.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Busch tungsten vanadium steel construction\u003c\/li\u003e\n\u003cli\u003eRound ball (Fig 1) bur profile, versatile for setting, drilling, and shaping\u003c\/li\u003e\n\u003cli\u003eCovers 0.50mm through 4.00mm in a single kit\u003c\/li\u003e\n\u003cli\u003eSelected by GIA instructors as part of the graduate jeweler program\u003c\/li\u003e\n\u003cli\u003e3\/32\" (2.35mm) shanks throughout\u003c\/li\u003e\n\u003cli\u003eIncludes extra quantities of the three most frequently used sizes\u003c\/li\u003e\n\u003cli\u003eStored in a plastic bur box with 48 holes for 3\/32\" shank burs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe 3\/32\" (2.35mm) shank fits standard flex-shaft and rotary handpieces.\u003c\/li\u003e\n\u003cli\u003eThe included bur box holds 3\/32\" shank burs.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43584448037078,"sku":"B118.8913","price":34.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/B118.8913NEW2_thumb_a3547902-756c-49ad-91c1-904313b88d24.jpg?v=1744043853"},{"product_id":"busch-fig-413-setting-bur-kit-6-piece-2-00mm-6-00mm","title":"Busch Fig 413 Setting Bur Kit of 6 Pieces-2.00mm to 6.00mm","description":"\u003cp\u003eThe Fig 413 setting bur cuts the seat that holds a stone, and this six piece kit covers the diameters that come up most often in prong, bezel, and flush setting work. Busch is among the most trusted names in professional jeweler's tooling, and this assortment was chosen by GIA instructors as part of the GIA graduate jeweler program, which makes it a solid foundation set for students and working jewelers alike.\u003c\/p\u003e\u003cp\u003eAll six burs are manufactured from genuine Busch tungsten vanadium steel and mounted on a 3\/32\" (2.35 mm) shank, compatible with standard flex shaft handpieces and drill systems. The kit spans 2.00 mm through 6.00 mm, covering the most commonly used setting bur diameters in everyday bench work, and arrives in a plastic bur box with 48 holes sized for 3\/32\" shank burs.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGenuine Busch tungsten vanadium steel construction\u003c\/li\u003e\n\u003cli\u003eFig 413 setting bur profile for precise stone seating\u003c\/li\u003e\n\u003cli\u003eSix piece kit covering 2.00 mm to 6.00 mm in key sizes\u003c\/li\u003e\n\u003cli\u003eSelected by GIA instructors as part of the GIA graduate jeweler program\u003c\/li\u003e\n\u003cli\u003eMounted on 3\/32\" (2.35 mm) shanks for standard handpiece compatibility\u003c\/li\u003e\n\u003cli\u003ePackaged in a plastic bur box for bench organization\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43584448659670,"sku":"B118.8914","price":44.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-413-setting-bur-kit-of-6-pieces-2-00mm-to-6-00mm-otto-frei-1.jpg?v=1719956184"},{"product_id":"busch-447au-pave-cut-carbide-twist-drill-assortment-9-piece-0-80mm-1-60mm-3-32-shank","title":"Busch 447AU Pave Cut Carbide Twist Drill Assortment of 9 On 3\/32\" Shanks 0.80mm-1.60mm","description":"\u003cp\u003eThe Busch 447AU Pavé Cut Carbide Twist Drill Assortment gives jewelers a versatile, time-saving set engineered specifically for pavé setting work. Each bur in this 9-piece collection combines a twist drill and a round bur into a single tool — pre-drilling and seat shaping happen in one pass, eliminating the need to switch tools mid-process. The result is improved precision, consistent stone seats, and a faster overall workflow.\u003c\/p\u003e\u003cp\u003eAll nine burs are manufactured from hot isostatically compressed finest-grain carbide, delivering exceptional hardness, wear resistance, and edge retention even under demanding use. Each bur is mounted on a 3\/32\" shank, compatible with standard flex shaft handpieces and rotary tools. The assortment spans 0.80mm through 1.60mm in 0.10mm increments, covering the most common pavé drilling requirements in a single purchase.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-in-1 design:\u003c\/strong\u003e combines twist drill and round bur functions in a single tool\u003c\/li\u003e\n\u003cli\u003ePre-drilling and seat shaping completed in one step for greater efficiency\u003c\/li\u003e\n\u003cli\u003eManufactured from hot isostatically compressed finest-grain carbide\u003c\/li\u003e\n\u003cli\u003eEngineered specifically for pavé setting applications\u003c\/li\u003e\n\u003cli\u003eConsistent 0.10mm incremental sizing for precise stone-seat matching\u003c\/li\u003e\n\u003cli\u003eMounted on standard 3\/32\" shanks for broad handpiece compatibility\u003c\/li\u003e\n\u003cli\u003e9-piece assortment covers 0.80mm–1.60mm range\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eFigure\u003c\/th\u003e\n\u003ctd\u003e447AU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eHot isostatically compressed finest-grain carbide\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShank Size\u003c\/th\u003e\n\u003ctd\u003e3\/32\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize Range\u003c\/th\u003e\n\u003ctd\u003e0.80mm–1.60mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize Increment\u003c\/th\u003e\n\u003ctd\u003e0.10mm steps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePieces per Set\u003c\/th\u003e\n\u003ctd\u003e9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003ePavé setting — pre-drilling and seat shaping\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cp\u003eOne each of the following 447AU Pavé Cut Carbide Twist Drills:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBAU118.448 — \u003cstrong\u003e0.80mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU118.449 — \u003cstrong\u003e0.90mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU118.450 — \u003cstrong\u003e1.00mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU118.451 — \u003cstrong\u003e1.10mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU118.452 — \u003cstrong\u003e1.20mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU118.453 — \u003cstrong\u003e1.30mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU118.454 — \u003cstrong\u003e1.40mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU118.455 — \u003cstrong\u003e1.50mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU118.456 — \u003cstrong\u003e1.60mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eThese burs are also available for individual purchase. See part number \u003cstrong\u003eBAU118.447AU\u003c\/strong\u003e for single-size ordering.\u003c\/p\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43584555253974,"sku":"BAU118.460","price":275.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-447au-pave-cut-carbide-twist-drill-assortment-of-9-on-332-shanks-0-80mm-1-60mm-otto-frei.jpg?v=1719956095"},{"product_id":"busch-ball-bur-kit-30pc-0-50-5-00mm-3-32-shank","title":"Busch Ball Bur Kit of 30 Pieces on 3\/32 Shanks-0.50mm to 5.00mm","description":"\u003cp\u003eBall burs open and enlarge drilled holes, cut seats for stones, and remove metal cleanly in close quarters, and the work stays precise only when the exact diameter is at hand. This 30-piece Busch Ball Bur Kit covers the most widely used ball bur sizes for professional jewelry work, with one Fig 1 bur in each of thirty sizes from 0.50 mm to 5.00 mm.\u003c\/p\u003e\n\u003cp\u003eBusch machine makes these burs in Germany from tungsten vanadium steel to ultra-high precision tolerances, so they cut precious metals smoothly and cleanly with minimal chatter or drag. Every bur is mounted on a 3\/32 in (2.35 mm) shank, and the kit is supplied in a plastic bur box drilled with 48 holes for 3\/32\" shank burs.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThirty sizes from 0.50–5.00 mm, one bur in each size\u003c\/li\u003e\n\u003cli\u003eBall (round) profile for general stone setting and metal removal\u003c\/li\u003e\n\u003cli\u003eTungsten vanadium steel construction\u003c\/li\u003e\n\u003cli\u003eMachine made to ultra-high precision tolerances\u003c\/li\u003e\n\u003cli\u003eSmooth, clean cutting action in precious metals\u003c\/li\u003e\n\u003cli\u003eMounted on 3\/32 in (2.35 mm) shanks\u003c\/li\u003e\n\u003cli\u003eSupplied in a plastic bur box with 48 holes for 3\/32\" shank burs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAll burs in the kit are on 3\/32 in (2.35 mm) shanks.\u003c\/li\u003e\n\u003cli\u003eThe included bur box holds 3\/32\" shank burs.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43584635961558,"sku":"B118.150","price":68.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-ball-bur-kit-of-30-pieces-on-332-shanks-0-50mm-to-5-00mm-otto-frei.jpg?v=1719956043"},{"product_id":"busch-fig-4203s-2-groove-carbide-twist-drills-3-32-shank-70mm-1-60mm-kit-10","title":"Busch Fig 4203S 2 Groove Carbide Twist Drills on 3\/32\" Shanks .70mm-1.60mm  - Kit of 10","description":"\u003cp\u003e\u003cem\u003e2-Groove design recommended for hard materials like steel, platinum, titanium, and hard metal alloys of gold and silver — outstanding service life.\u003c\/em\u003e\u003c\/p\u003e\u003cp\u003eBusch Fig 4203S carbide twist drills are engineered to expel more material from the hole, allowing them to perform better and last longer when cutting hard metals. These drills outperform high-speed steel and standard tungsten carbide when drilling jewelry metals and can also be used on mild steel. The special 2-groove construction makes chip removal easier and significantly reduces breakage risk.\u003c\/p\u003e\u003cp\u003eUsing a coolant extends service life. These drills perform best when used in a drill press — as with any drill, breakage can occur with excess leverage or canting. When used freehand, a starting guide hole is recommended.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNot for use with glass, ceramics, or gemstones.\u003c\/strong\u003e\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e2-groove carbide construction for superior chip expulsion and reduced breakage\u003c\/li\u003e\n\u003cli\u003eOutlasts high-speed steel and standard tungsten carbide in hard metal applications\u003c\/li\u003e\n\u003cli\u003eSuitable for steel, platinum, titanium, and hard alloys of gold and silver\u003c\/li\u003e\n\u003cli\u003eCompatible with mild steel\u003c\/li\u003e\n\u003cli\u003eUse of coolant increases drill lifespan\u003c\/li\u003e\n\u003cli\u003e3\/32\" shank fits standard flex shaft and drill press collets\u003c\/li\u003e\n\u003cli\u003eFreehand recommended speed: 5,000–9,000 RPM\u003c\/li\u003e\n\u003cli\u003eDrill press recommended speed: 8,000–14,000 RPM\u003c\/li\u003e\n\u003cli\u003eNot for use on glass, ceramics, or gemstones\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eFigure\u003c\/th\u003e\n\u003ctd\u003e4203S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShank Size\u003c\/th\u003e\n\u003ctd\u003e3\/32\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDrill Type\u003c\/th\u003e\n\u003ctd\u003e2-Groove Carbide Twist Drill\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDiameter Range\u003c\/th\u003e\n\u003ctd\u003e0.70mm–1.60mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Speed (Freehand)\u003c\/th\u003e\n\u003ctd\u003e5,000–9,000 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Speed (Drill Press)\u003c\/th\u003e\n\u003ctd\u003e8,000–14,000 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eKit Quantity\u003c\/th\u003e\n\u003ctd\u003e10 drills\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cp\u003eKit of 10 carbide twist drills, one of each diameter:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBAU128.427 — \u003cstrong\u003e0.70mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU128.428 — \u003cstrong\u003e0.80mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU128.429 — \u003cstrong\u003e0.90mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU128.430 — \u003cstrong\u003e1.00mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU128.431 — \u003cstrong\u003e1.10mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU128.432 — \u003cstrong\u003e1.20mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU128.433 — \u003cstrong\u003e1.30mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU128.434 — \u003cstrong\u003e1.40mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU128.435 — \u003cstrong\u003e1.50mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBAU128.436 — \u003cstrong\u003e1.60mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eA starting guide hole is recommended when drilling freehand.\u003c\/li\u003e\n\u003cli\u003eCoolant use is recommended to maximize drill lifespan.\u003c\/li\u003e\n\u003cli\u003eBreakage may occur with excess leverage or canting — drill press use minimizes this risk.\u003c\/li\u003e\n\u003cli\u003eNot suitable for glass, ceramics, or gemstones.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Busch Burs","offers":[{"title":"Default Title","offer_id":43586843050198,"sku":"BAU128.420","price":177.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-4203s-2-groove-carbide-twist-drills-on-332-shanks-70mm-1-60mm-kit-of-10-otto-frei.jpg?v=1719955765"},{"product_id":"busch-232-circular-saw-blades-stainless-steel-19mm-22mm","title":"Busch 232-Circular Saw Blades","description":"\u003cp\u003eBusch circular saw blades are precision-made in Germany from \u003cstrong\u003e0.10mm (0.004\") thick stainless steel\u003c\/strong\u003e, engineered for clean, accurate cuts in jewelry and metalsmithing applications. Each blade features a \u003cstrong\u003e1\/16\" diameter center hole\u003c\/strong\u003e for standard mandrel mounting. Available in two diameters to suit a variety of cutting tasks, these blades are sold individually so you can stock exactly what you need.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGerman-made by Busch for consistent professional quality\u003c\/li\u003e\n\u003cli\u003eConstructed from stainless steel for durability and corrosion resistance\u003c\/li\u003e\n\u003cli\u003eUltra-thin 0.10mm (0.004\") blade thickness for precise, minimal-kerf cuts\u003c\/li\u003e\n\u003cli\u003e1\/16\" diameter center hole designed for mandrel mounting\u003c\/li\u003e\n\u003cli\u003eAvailable in two diameters: 3\/4\" (19mm) and 7\/8\" (22mm)\u003c\/li\u003e\n\u003cli\u003eSold individually — purchase only the quantity you need\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eStainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBlade Thickness\u003c\/th\u003e\n\u003ctd\u003e0.10mm (0.004\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCenter Hole Diameter\u003c\/th\u003e\n\u003ctd\u003e1\/16\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOrigin\u003c\/th\u003e\n\u003ctd\u003eGermany\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold As\u003c\/th\u003e\n\u003ctd\u003eIndividually (per piece)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eAvailable Options\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eDiameter\u003c\/th\u003e\n\u003cth\u003eThickness\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e148.890\u003c\/td\u003e\n\u003ctd\u003e3\/4\" (19mm)\u003c\/td\u003e\n\u003ctd\u003e0.004\" (0.10mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e148.891\u003c\/td\u003e\n\u003ctd\u003e7\/8\" (22mm)\u003c\/td\u003e\n\u003ctd\u003e0.004\" (0.10mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Busch Burs","offers":[{"title":"3\/4\" x .004","offer_id":47551722979542,"sku":"148.890","price":3.15,"currency_code":"USD","in_stock":true},{"title":"7\/8\" x .004\"","offer_id":47551723012310,"sku":"148.891","price":3.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-232-circular-saw-blades-otto-frei.jpg?v=1719955512"},{"product_id":"busch-fig-411t-twincut-concave-cup-burs-80mm-2-00mm-6-pack","title":"Busch Fig. 411T - Twincut Concave Cup Burs .80mm-2.00mm-6 Packs","description":"\u003cp\u003eA 3-in-1 cup bur finishes and rounds prongs during stone setting, clearing metal shavings as it works so the tip comes out clean and controlled.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBusch Fig. 411T\u003c\/strong\u003e cup burs pair the traditional concave cup shape with twincut blade geometry for exactly that job. They are manufactured from tungsten vanadium steel to ultra-high precision tolerances and are sold here in packs of six, in 13 sizes from 0.80 mm–2.00 mm.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFig. 411T traditional concave cup profile\u003c\/li\u003e\n\u003cli\u003e3-in-1 twincut blade geometry for efficient chip clearance\u003c\/li\u003e\n\u003cli\u003eDesigned for rounding and finishing prong tips\u003c\/li\u003e\n\u003cli\u003eManufactured from tungsten vanadium steel\u003c\/li\u003e\n\u003cli\u003eMade to ultra-high precision tolerances\u003c\/li\u003e\n\u003cli\u003eAvailable in sizes from 0.80 mm–2.00 mm\u003c\/li\u003e\n\u003cli\u003eSold in packs of six\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAvailable Options\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eBur Size\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.450\u003c\/td\u003e\n\u003ctd\u003e0.80 mm (0.031 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.451\u003c\/td\u003e\n\u003ctd\u003e0.90 mm (0.035 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.452\u003c\/td\u003e\n\u003ctd\u003e1.00 mm (0.039 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.453\u003c\/td\u003e\n\u003ctd\u003e1.10 mm (0.043 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.454\u003c\/td\u003e\n\u003ctd\u003e1.20 mm (0.047 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.455\u003c\/td\u003e\n\u003ctd\u003e1.30 mm (0.051 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.456\u003c\/td\u003e\n\u003ctd\u003e1.40 mm (0.055 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.457\u003c\/td\u003e\n\u003ctd\u003e1.50 mm (0.059 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.458\u003c\/td\u003e\n\u003ctd\u003e1.60 mm (0.063 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.459\u003c\/td\u003e\n\u003ctd\u003e1.70 mm (0.067 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.460\u003c\/td\u003e\n\u003ctd\u003e1.80 mm (0.071 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.461\u003c\/td\u003e\n\u003ctd\u003e1.90 mm (0.075 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.462\u003c\/td\u003e\n\u003ctd\u003e2.00 mm (0.079 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Busch Burs","offers":[{"title":".80mm","offer_id":43696841425110,"sku":"B118.450","price":27.85,"currency_code":"USD","in_stock":true},{"title":".90mm","offer_id":43696841457878,"sku":"B118.451","price":27.85,"currency_code":"USD","in_stock":true},{"title":"1.00mm","offer_id":43696841490646,"sku":"B118.452","price":27.85,"currency_code":"USD","in_stock":true},{"title":"1.10mm","offer_id":43696841523414,"sku":"B118.453","price":27.85,"currency_code":"USD","in_stock":true},{"title":"1.20mm","offer_id":43696841556182,"sku":"B118.454","price":27.85,"currency_code":"USD","in_stock":true},{"title":"1.30mm","offer_id":43696841588950,"sku":"B118.455","price":27.85,"currency_code":"USD","in_stock":true},{"title":"1.40mm","offer_id":43696841621718,"sku":"B118.456","price":27.85,"currency_code":"USD","in_stock":true},{"title":"1.50mm","offer_id":43696841654486,"sku":"B118.457","price":27.85,"currency_code":"USD","in_stock":true},{"title":"1.60mm","offer_id":43696841687254,"sku":"B118.458","price":27.85,"currency_code":"USD","in_stock":true},{"title":"1.70mm","offer_id":43696841720022,"sku":"B118.459","price":27.85,"currency_code":"USD","in_stock":true},{"title":"1.80mm","offer_id":43696841752790,"sku":"B118.460","price":27.85,"currency_code":"USD","in_stock":true},{"title":"1.90mm","offer_id":43696841785558,"sku":"B118.461","price":27.85,"currency_code":"USD","in_stock":true},{"title":"2.00mm","offer_id":43696841818326,"sku":"B118.462","price":27.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-411t-twincut-concave-cup-burs-80mm-2-00mm-6-packs-otto-frei.jpg?v=1689357671"},{"product_id":"busch-fig-1-ball-burs-4-00-8-50mm","title":"Busch Fig. 1 Ball Burs 4.00mm-8.50mm","description":"\u003cp\u003eBall burs cut, shape, hollow, and texture metal at the bench, and this listing covers the larger sizes, 4.00 mm through 8.50 mm, for heavy stock removal. \u003cstrong\u003eBusch Fig. 1 Ball Burs\u003c\/strong\u003e are the industry standard for precision and quality in jewelry and metalworking, manufactured in Germany from high-grade \u003cstrong\u003etungsten vanadium steel\u003c\/strong\u003e to extremely tight tolerances for smooth cutting action and long tool life.\u003c\/p\u003e\u003cp\u003eEach bur carries a precisely formed ball profile with accurate concentricity for vibration-free operation on a 3\/32\" (2.35 mm) shank. Sizes in this range are sold individually.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eManufactured in Germany by Busch\u003c\/li\u003e\n\u003cli\u003eFig. 1 ball bur profile, European and USA standard\u003c\/li\u003e\n\u003cli\u003eHigh-grade tungsten vanadium steel for clean, consistent cutting\u003c\/li\u003e\n\u003cli\u003eAccurately machined and balanced for vibration-free precision work\u003c\/li\u003e\n\u003cli\u003e3\/32\" (2.35 mm) shank\u003c\/li\u003e\n\u003cli\u003eIdeal for shaping, texturing, and hollowing metal surfaces\u003c\/li\u003e\n\u003cli\u003eSizes 4.00 mm and larger sold individually\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAvailable Options\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eBur Size\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.206\u003c\/td\u003e\n\u003ctd\u003e4.00 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.207\u003c\/td\u003e\n\u003ctd\u003e4.20 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.208\u003c\/td\u003e\n\u003ctd\u003e4.50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.209\u003c\/td\u003e\n\u003ctd\u003e4.70 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.210\u003c\/td\u003e\n\u003ctd\u003e5.00 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.212\u003c\/td\u003e\n\u003ctd\u003e5.50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.214\u003c\/td\u003e\n\u003ctd\u003e6.00 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.216\u003c\/td\u003e\n\u003ctd\u003e6.50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.218\u003c\/td\u003e\n\u003ctd\u003e7.00 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.220\u003c\/td\u003e\n\u003ctd\u003e7.50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.222\u003c\/td\u003e\n\u003ctd\u003e8.00 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB118.224\u003c\/td\u003e\n\u003ctd\u003e8.50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eBusch ball burs under 4.00 mm are sold in multiples of six. The sizes covered by this listing, 4.00 mm and larger, are sold individually. For best results, run at moderate speed with appropriate lubrication.\u003c\/p\u003e","brand":"Busch Burs","offers":[{"title":"4.00mm","offer_id":43696857743574,"sku":"B118.206","price":5.2,"currency_code":"USD","in_stock":true},{"title":"4.20mm","offer_id":43696857809110,"sku":"B118.207","price":5.2,"currency_code":"USD","in_stock":true},{"title":"4.50mm","offer_id":43696857841878,"sku":"B118.208","price":5.2,"currency_code":"USD","in_stock":true},{"title":"4.70mm","offer_id":43696857874646,"sku":"B118.209","price":5.2,"currency_code":"USD","in_stock":true},{"title":"5.00mm","offer_id":43696857907414,"sku":"B118.210","price":5.2,"currency_code":"USD","in_stock":true},{"title":"5.50mm","offer_id":43696857940182,"sku":"B118.212","price":8.7,"currency_code":"USD","in_stock":true},{"title":"6.00mm","offer_id":43696857972950,"sku":"B118.214","price":8.7,"currency_code":"USD","in_stock":true},{"title":"6.50mm","offer_id":43696858005718,"sku":"B118.216","price":8.7,"currency_code":"USD","in_stock":true},{"title":"7.00mm","offer_id":43696858038486,"sku":"B118.218","price":8.7,"currency_code":"USD","in_stock":true},{"title":"7.50mm","offer_id":43696858071254,"sku":"B118.220","price":10.75,"currency_code":"USD","in_stock":true},{"title":"8.00mm","offer_id":43696858104022,"sku":"B118.222","price":10.75,"currency_code":"USD","in_stock":true},{"title":"8.50mm","offer_id":43696858136790,"sku":"B118.224","price":10.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/busch-fig-1-ball-burs-4-00mm-8-50mm-otto-frei.jpg?v=1719955376"},{"product_id":"busch-fig-411ccc-clean-cut-concave-cup-burs-1-00mm-2-30mm-6-pack","title":"Busch Fig. 411CCC Clean Cut Concave Cup Burs 1.00mm-2.30mm-6 Packs","description":"\u003cp\u003eCup burs round and finish prong tips during stone setting. 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