{"product_id":"jefe-hex-29-pc-m35-cobalt-drill-bit-set-durable-metal-bits","title":"JEFE HEX 29 PC M35 Cobalt Drill Bit Set - Durable Metal Bits","description":"\u003cp\u003eIn this review of the JEFE HEX 29 PCS M35 Cobalt Drill Bit Set the bottom line is simple: this kit is aimed at homeowners, fabricators and mechanics who need a durable, heat resistant set for drilling metals. The reviewer found the set stands out for its \u003cstrong\u003ecobalt alloy construction\u003c\/strong\u003e and practical case, which together make it useful for repeated work on stainless steel, mild steel and other hard alloys. For anyone who drills metal frequently and wants bits that resist heat and wear, this set is a compelling value.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e5% cobalt HSS:\u003c\/strong\u003e Provides higher heat resistance and extended tool life compared to standard high speed steel bits, so bits last longer under heavy use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGold oxide finish:\u003c\/strong\u003e Acts as a lubricant and wear barrier, helping bits cut cleaner and resist surface abrasion during drilling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e135 degree split point:\u003c\/strong\u003e Self-centering tip reduces walking and often removes the need for a pilot hole when starting holes in metal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree-flat and reduced shanks:\u003c\/strong\u003e Three-flat shanks on smaller sizes reduce spinning in the chuck and larger bits use a 3\/8 in reduced shank for broad drill compatibility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull size range:\u003c\/strong\u003e The 29-piece assortment covers 1\/16 in through 1\/2 in in 1\/64 in increments, so you can match exact hole sizes without guesswork.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePortable round case:\u003c\/strong\u003e Ergonomic, clip-ready case keeps bits organized and attaches to a tool belt for immediate access on the job.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis set is best suited to DIYers, metalworkers and tradespeople who regularly drill stainless steel, cast iron, titanium alloys, high temperature alloys and other hard materials. The M35 cobalt blend and split point tip make it a practical choice for workshop and maintenance tasks where heat buildup and tool life matter.\u003c\/p\u003e\u003cp\u003eThose who only need bits for occasional wood or soft plastic work, or who require specialty coated carbide bits for industrial production drilling, may prefer a different, more specialized kit. Also, users who need metric sizes will need to look elsewhere since this set is imperial only.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHigh durability from 5% cobalt composition results in longer life when drilling hard metals.\u003c\/li\u003e\n\u003cli\u003eGold oxide finish improves wear resistance and helps bits cut smoother.\u003c\/li\u003e\n\u003cli\u003eComprehensive size selection reduces the need to buy individual bits for common hole sizes.\u003c\/li\u003e\n\u003cli\u003eConvenient round carrying case with clip keeps bits organized and portable.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eImperial-only sizes mean users who need metric measurements must purchase additional sets.\u003c\/li\u003e\n\u003cli\u003eNot a coated carbide option, so extreme production environments may favor different materials.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eJEFE HEX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eM35 cobalt high speed steel (5% cobalt)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eGold oxide\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTip angle\u003c\/td\u003e\n\u003ctd\u003e135 degrees split point\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank types\u003c\/td\u003e\n\u003ctd\u003eThree-flat shank for sizes under 3\/8 in, 3\/8 in reduced shank for larger bits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize range\u003c\/td\u003e\n\u003ctd\u003e1\/16 in to 1\/2 in by 1\/64 in increments (29 pcs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase\u003c\/td\u003e\n\u003ctd\u003eRound portable case with built-in clip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe JEFE HEX 29 PCS M35 Cobalt Drill Bit Set is a solid, cost-effective choice for anyone who drills metal regularly and wants bits that resist heat and last. With a full imperial size spread, a helpful carrying case and practical features like the split point and three-flat shanks, it offers real value for hobbyists and pros alike, though metric users or those needing carbide should consider alternatives.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eAre these bits good for stainless steel?\u003c\/strong\u003e\u003cbr\u003eYes, the M35 cobalt composition and 135 degree split point make them suitable for drilling stainless steel and other hard alloys.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the bits fit standard drills?\u003c\/strong\u003e\u003cbr\u003eYes, smaller bits have three-flat shanks to reduce slipping and larger bits use a 3\/8 in reduced shank compatible with most drill chucks and chucks with an adapter.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the set include every fraction between sizes?\u003c\/strong\u003e\u003cbr\u003eThe set covers sizes from 1\/16 in to 1\/2 in in 1\/64 in increments, providing a continuous range of imperial sizes.\u003c\/p\u003e","brand":"JEFE HEX","offers":[{"title":"Default Title","offer_id":48203909562587,"sku":"B0B871GCMR","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71V2FgMAX5L._SL1500.jpg?v=1770232016","url":"https:\/\/gearmusthave.com\/products\/jefe-hex-29-pc-m35-cobalt-drill-bit-set-durable-metal-bits","provider":"GearMustHave","version":"1.0","type":"link"}