{"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\u003eSold by the piece, Busch Fig 446AU carbide 70° hart burs are designed for cutting clean, accurate stone seats in prongs on precious and hard metals. The sharp carbide blades bite smoothly into the metal, providing a controlled, predictable feel at the handpiece.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e70° hart profile engineered specifically for cutting prong seats for stone setting.\u003c\/li\u003e\n\u003cli\u003eCarbide construction for extremely long service life compared to 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\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBur Type\u003c\/th\u003e\n\u003ctd\u003e70° hart bur, Fig 446AU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003eCutting stone seats in prongs\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\u003eDiameter Range\u003c\/th\u003e\n\u003ctd\u003e0.90–2.30 mm (0.035–0.091 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShank\u003c\/th\u003e\n\u003ctd\u003e3\/32 in (approx. 2.38 mm)\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\u003eSold By\u003c\/th\u003e\n\u003ctd\u003ePiece\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\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° 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":false},{"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","url":"https:\/\/www.ottofrei.com\/products\/busch-fig-446au-carbide-70-hart-burs-3-32-shank-0-90-2-30mm","provider":"Otto Frei","version":"1.0","type":"link"}