{"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 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