{"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","url":"https:\/\/www.ottofrei.com\/products\/busch-fig-4203s-2-groove-carbide-twist-drills-3-32-shank-70mm-1-60mm-kit-10","provider":"Otto Frei","version":"1.0","type":"link"}