{"product_id":"1-1-2-in-cobalt-drill-bit-1-5in-m35-hssco-heavy-duty-stainless-drill","title":"1-1\/2 in Cobalt Drill Bit 1.5in M35 HSSCO - Heavy-Duty Stainless Drill","description":"\u003cp\u003eIn this review the 1-1\/2 in Cobalt Drill Bit (M35 HSSCO) is evaluated as a heavy-duty option for metalworkers who need a durable, sharp drill for tough materials. The bottom line: it is best for machinists and contractors who drill cast iron, copper, zinc alloy and particularly stainless steel because the M35 HSSCO composition and the 135-degree split point improve wear resistance and centering. The black and gold polished treatment also helps coolant cling to the cutting edge, reducing heat during longer holes and supporting reliable cutting when used properly.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM35 HSSCO construction:\u003c\/strong\u003e delivers a balance of hardness and toughness for wear resistance in demanding metal drilling applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlack and gold polished surface:\u003c\/strong\u003e adds lubricity and creates small pockets that hold coolant near the cutting edge to reduce heat buildup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e135-degree split point:\u003c\/strong\u003e provides accurate centering and faster penetration so holes start cleanly without excessive wandering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpiral flutes (right-hand cut):\u003c\/strong\u003e evacuate chips up and out of the cut to reduce clogging and improve cutting stability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRound reduced shank:\u003c\/strong\u003e 1\/2 in reduced shank allows use in a variety of chucks and toolholding systems while keeping a larger cutting diameter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial versatility:\u003c\/strong\u003e suitable for cast iron, zinc alloy, copper and stainless steel, making it useful across common shop tasks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe drill bit is aimed at professional machinists, metal fabrication shops and serious DIYers who regularly drill hardened or abrasive metals and need a bit that stays sharp and resists wear. Its size and reduced shank make it a practical choice when a larger diameter is required but the available chuck cannot accept a full 1-1\/2 in shank.\u003c\/p\u003e\n\u003cp\u003eIt is less suited to casual users who only drill wood or soft plastics, or to applications that require specialized coatings or carbide tips for extreme production speeds. Buyers who need guaranteed perfect accuracy every time should consider pairing this bit with a good drill press and proper setup, since some users reported mixed results on centering in difficult setups.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExcellent wear resistance from \u003cstrong\u003eM35 HSSCO\u003c\/strong\u003e material for tougher metals.\u003c\/li\u003e\n\u003cli\u003ePolished black and gold finish holds coolant and reduces friction for longer runs.\u003c\/li\u003e\n\u003cli\u003e135-degree split point improves centering and reduces walking at the start of the hole.\u003c\/li\u003e\n\u003cli\u003eRound reduced shank fits a wide range of toolholders, increasing versatility.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSome users report mixed drilling accuracy depending on setup, so precise work demands a stable jig or press.\u003c\/li\u003e\n\u003cli\u003eDurability varied in reports, with occasional breakage when pushed beyond recommended feeds or without proper pecking\/cooling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e1-1\/2 in (1.5in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eM35 HSSCO high-speed steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank\u003c\/td\u003e\n\u003ctd\u003e1\/2 in reduced round shank\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall length\u003c\/td\u003e\n\u003ctd\u003e6 in OAL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePoint angle\u003c\/td\u003e\n\u003ctd\u003e135-degree split point\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlute\u003c\/td\u003e\n\u003ctd\u003eSpiral fluted, right-hand cut\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurface finish\u003c\/td\u003e\n\u003ctd\u003eBlack and gold polished\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe 1-1\/2 in M35 HSSCO cobalt drill bit is a solid choice for metalworkers who need a durable, high-performance bit for stainless steel and other metals. It offers good value for those who use proper setups and cooling; it performs best in a drill press or secure jig where the split point and polished surfaces can be used to their full advantage.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this bit suitable for stainless steel?\u003c\/strong\u003e\u003cbr\u003eYes, the M35 HSSCO composition and the polished surface make it appropriate for drilling stainless steel when used with proper coolant and moderate feed rates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it be used in a hand drill?\u003c\/strong\u003e\u003cbr\u003eIt can, but for best accuracy and to reduce breakage risk the bit performs better in a drill press or with a secure jig and steady feed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does the reduced shank mean?\u003c\/strong\u003e\u003cbr\u003eThe 1\/2 in reduced round shank lets the larger 1-1\/2 in diameter bit fit into chucks that cannot accept the full diameter shank, increasing compatibility with common toolholders.\u003c\/p\u003e","brand":"VALYRIANTOOL","offers":[{"title":"Default Title","offer_id":48602190971099,"sku":"B0B6FX6RJT","price":41.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/41WR3PY-2sL._SL1000.jpg?v=1778420553","url":"https:\/\/gearmusthave.com\/products\/1-1-2-in-cobalt-drill-bit-1-5in-m35-hssco-heavy-duty-stainless-drill","provider":"GearMustHave","version":"1.0","type":"link"}