{"product_id":"41-64-in-cobalt-drill-bits-3-pack-precision-metal-drilling","title":"41\/64 in Cobalt Drill Bits 3 Pack - Precision Metal Drilling","description":"\u003cp\u003eIn this review of the 41\/64 in Cobalt Drill Bits 3 Pack the bottom line is simple: these are purpose-built bits for people who frequently drill hard metals and need a consistent, precision diameter. The set includes three M35 cobalt bits with a 41\/64 in diameter, a 3 in flute length and 6 in overall length, and the reviewer found the most compelling reason to buy is the combination of a fully ground diameter and a 135 split point that reduces walking and improves repeatable hole placement in tough materials.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e41\/64 in Diameter:\u003c\/strong\u003e Delivers a consistent hole size useful for tasks that require a precise 41\/64 in finished hole.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM35 Cobalt Construction:\u003c\/strong\u003e Contains 5% cobalt for increased heat resistance and wear life when drilling hardened and stainless steels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3 in Flute and 6 in Overall Length:\u003c\/strong\u003e The flute depth supports through-drilling and chip evacuation while the 6 in overall length reaches deeper workpieces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully Ground, 135 Split Point:\u003c\/strong\u003e Fully ground geometry and the split point start cleaner and reduce the need for pilot holes on metal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlastic Storage Case:\u003c\/strong\u003e A tough plastic case keeps all three bits organized and protected between jobs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThese bits are aimed at professional fabricators, maintenance techs and serious DIYers who work with metal regularly - stainless steel, hardened steel, cast iron, bronze and other tough alloys. The M35 grade and split point are especially useful when repeated holes and accuracy are important.\u003c\/p\u003e\n\u003cp\u003eThose who only drill soft materials or need a wide assortment of sizes should look elsewhere; this pack is a specialized set centered on a single 41\/64 in diameter rather than a general multipack of varied sizes.\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\u003ePrecision 41\/64 in diameter and fully ground finish give consistent hole sizes for fit-critical work.\u003c\/li\u003e\n\u003cli\u003eM35 cobalt alloy offers better heat tolerance and cutting life on stainless and hardened steels than standard HSS.\u003c\/li\u003e\n\u003cli\u003e135 split point reduces walking and improves starts on hard materials, speeding repeated drilling.\u003c\/li\u003e\n\u003cli\u003eIncluded plastic storage case protects the bits and keeps them organized on the job.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePack contains only one diameter so it is not a substitute for a full set of sizes.\u003c\/li\u003e\n\u003cli\u003eCustomer feedback on durability is mixed; some users report breakage under heavy use, so care and correct speeds\/feeds are important.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eNarwhal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e41\/64 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlute Length\u003c\/td\u003e\n\u003ctd\u003e3 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eM35 cobalt (5% cobalt)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePoint\u003c\/td\u003e\n\u003ctd\u003e135 split point, fully ground\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack\u003c\/td\u003e\n\u003ctd\u003e3 pack with plastic storage case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Narwhal 41\/64 in M35 cobalt 3 pack is a solid choice for anyone who regularly drills hard metals and needs a reliable, precise 41\/64 in hole. It offers good value when you consider the M35 alloy, split point starting and protective case; buy it if you need durability and repeatable performance, but expect to use proper feeds and speeds to avoid breakage.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these drill bits suitable for stainless steel?\u003c\/strong\u003e\u003cbr\u003eYes, the M35 cobalt composition and split point are intended for stainless and other hardened metals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow long are the bits?\u003c\/strong\u003e\u003cbr\u003eEach bit has a 3 in flute length and a 6 in total length.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the pack include storage?\u003c\/strong\u003e\u003cbr\u003eYes, the set ships in a durable plastic storage case that holds all three bits securely.\u003c\/p\u003e","brand":"Narwhal","offers":[{"title":"Default Title","offer_id":48198804799707,"sku":"B0DLX519Q5","price":33.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/7192B96cOTL._SL1500.jpg?v=1769793137","url":"https:\/\/gearmusthave.com\/products\/41-64-in-cobalt-drill-bits-3-pack-precision-metal-drilling","provider":"GearMustHave","version":"1.0","type":"link"}