{"product_id":"47-64-in-cobalt-drill-bits-3-pack-durable-m35-6-in-length","title":"47\/64 in Cobalt Drill Bits 3 Pack - Durable M35, 6 in Length","description":"\u003cp\u003eIn this review the 47\/64 in Cobalt Drill Bits 3 Pack is judged for users who frequently drill hard metals and need a consistent, ready-to-use set. The biggest reason to buy is the combination of M35 construction with a 135 split point that starts cleanly and maintains a precise diameter through repeated holes in stainless and hardened steels. The included plastic storage case keeps the set organized, so a mechanic, machinist or serious DIYer gets both durable bits and convenient storage in one purchase.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003e47\/64 in Diameter:\u003c\/strong\u003e Provides a large, consistent hole size for applications that require this specific diameter without guessing or regrinding.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eM35 Construction:\u003c\/strong\u003e The bits contain 5% cobalt for improved hardness and heat resistance when drilling metals like stainless and hardened steel.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e135 Split Point:\u003c\/strong\u003e The split point geometry reduces walking and makes it easier to start and repeat holes in tougher materials.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e6 in Total Length:\u003c\/strong\u003e With a 3 in flute length and 6 in overall length, the bits reach deeper pockets while maintaining rigidity for controlled drilling.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePlastic Storage Case:\u003c\/strong\u003e A tough plastic case is included to protect the bits in a toolbox and keep them organized between jobs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe pack is best suited to professional tradespeople and experienced hobbyists who regularly drill through metals such as stainless steel, cast iron, titanium and hardened steel, and who need a reliable 47\/64 in size with good heat resistance. It also fits shop environments where repeated holemaking demands a consistently ground diameter.\u003c\/p\u003e\n\u003cp\u003eThose who primarily drill wood, masonry, or only occasional small holes in thin metals should look elsewhere for smaller, cheaper bits optimized for those materials; this set is purpose-built for metalwork and is overkill for light household tasks.\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\u003eHigh hardness from M35 cobalt alloy gives better wear resistance when cutting tough metals.\u003c\/li\u003e\n \u003cli\u003e135 split point improves centering and reduces the need for pilot holes on metal surfaces.\u003c\/li\u003e\n \u003cli\u003eFully ground flutes maintain a precise drilling diameter and smooth cutting action.\u003c\/li\u003e\n \u003cli\u003eIncluded durable plastic case keeps each bit secure and easy to transport.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eDurability reports are mixed; some users find the bits break more easily under heavy misuse or extreme bind than expected.\u003c\/li\u003e\n \u003cli\u003eThe single diameter pack limits versatility if you need a range of hole sizes for general work.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n\u003ctd\u003ePack Quantity\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e47\/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\u003eTip Geometry\u003c\/td\u003e\n\u003ctd\u003e135 split point, fully ground\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eStorage\u003c\/td\u003e\n\u003ctd\u003ePlastic storage case included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThis 47\/64 in cobalt drill bit 3 pack is a practical choice for metalworkers who need a reliable, precisely ground bit with good heat resistance and easy starts from the 135 split point. For tasks that demand consistent large-diameter holes in stainless or hardened steel, the set offers good value thanks to M35 construction and the protective case, though buyers should respect proper speeds and feed to avoid premature breakage.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these bits suitable for stainless steel?\u003c\/strong\u003e\u003cbr\u003eYes. The M35 5% cobalt composition and split point geometry are designed to cut stainless and other hard metals effectively.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the pack include a case?\u003c\/strong\u003e\u003cbr\u003eYes. A tough plastic storage case is included to keep the three bits organized and protected.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat length and flute depth do these bits have?\u003c\/strong\u003e\u003cbr\u003eEach bit has a 6 in total length with a 3 in flute length, suitable for deeper holes while retaining rigidity.\u003c\/p\u003e","brand":"Narwhal","offers":[{"title":"Default Title","offer_id":48611861463259,"sku":"B0DLXK5FB8","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71WS5KH39FL._SL1500.jpg?v=1778503537","url":"https:\/\/gearmusthave.com\/products\/47-64-in-cobalt-drill-bits-3-pack-durable-m35-6-in-length","provider":"GearMustHave","version":"1.0","type":"link"}