{"product_id":"amoolo-cobalt-drill-bit-set-31pcs-1-16in-1-2in-m35-high-speed-steel","title":"AMOOLO Cobalt Drill Bit Set 31Pcs 1\/16in-1\/2in - M35 High Speed Steel","description":"\u003cp\u003eIn this review the AMOOLO Cobalt Drill Bit Set 31Pcs is evaluated for metalworkers and hobbyists who need a wide range of sizes in a single kit. The set stands out because it uses \u003cstrong\u003eM35 cobalt high speed steel\u003c\/strong\u003e with 5% cobalt, which delivers greater wear resistance and hotter-cutting capability than standard HSS bits; that is the single biggest reason a buyer focused on drilling hardened metal should consider it. The kit's jobber length assortment and plastic case make it a practical choice for shop or garage use, though users should mind speed and heat control when drilling tough alloys.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM35 cobalt steel:\u003c\/strong\u003e The 5% cobalt content increases heat resistance and hardness for longer life when cutting stainless steel and hardened metals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide size range:\u003c\/strong\u003e Thirty-one jobber length bits cover common sizes from 1\/16in to 1\/2in, letting the user avoid frequent trips to buy a single size.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSplit point design:\u003c\/strong\u003e The 135 split point reduces walking so holes start cleanly without a center punch in most cases.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpiral flute geometry:\u003c\/strong\u003e Fully ground spiral grooves evacuate chips quickly and reduce friction and heat during drilling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact storage case:\u003c\/strong\u003e The portable plastic case keeps bits organized and easy to transport between jobs or around the shop.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis set is best for DIYers, metal fabricators and mechanics who frequently drill into \u003cstrong\u003estainless steel\u003c\/strong\u003e, steel, cast iron and other harder metals and want a broad selection of sizes without buying individual bits. It is also useful for any workshop that needs reliable jobber length bits for general purpose cutting through aluminum, plastic and wood.\u003c\/p\u003e\u003cp\u003eThose who primarily drill very thin sheet metal or need extreme precision on delicate parts may want a different specialty bit or a smaller-diameter premium bit; similarly, heavy production shops that demand maximum tool life under continuous high-volume use might prefer industrial-bonded or coated tool bits designed for CNC or high-feed applications.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGood value: offers 31 sizes and a storage case for a price that compares well with pricier cobalt sets.\u003c\/li\u003e\n\u003cli\u003eEffective on hard metals: M35 composition and split point produce clean starts and cut through stainless and mild steel well.\u003c\/li\u003e\n\u003cli\u003eFast chip evacuation: fully ground spiral flutes reduce heat buildup for cooler drilling.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eMixed durability reports: some users report breakage when pushing through very thin tough sheet metal, so careful feed and speed control are important.\u003c\/li\u003e\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\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\u003eSet contents\u003c\/td\u003e\n\u003ctd\u003e31 jobber length drill bits, sizes 1\/16in to 1\/2in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePoint type\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\u003eFully ground spiral flute for chip evacuation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase\u003c\/td\u003e\n\u003ctd\u003ePortable plastic storage case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplications\u003c\/td\u003e\n\u003ctd\u003eStainless steel, steel, cast iron, aluminum, plastic, wood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e90 day hassle-free warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe AMOOLO 31-piece M35 cobalt set is a solid, cost-effective kit for hobbyists and small shops that need a full range of jobber length sizes and the ability to cut harder metals. It delivers strong drilling performance thanks to its \u003cstrong\u003eM35 cobalt\u003c\/strong\u003e construction and split point design, though users should control speed and pressure to avoid breakage on thin gauge steel. Overall it represents good value for those who want versatile, durable bits without buying singles.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eCan these bits drill stainless steel?\u003c\/strong\u003e\u003cbr\u003eYes. The M35 cobalt composition and 135 split point make them suitable for drilling stainless steel with proper speed and coolant where needed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need a center punch with these bits?\u003c\/strong\u003e\u003cbr\u003eUsually not; the 135 split point helps prevent walking so a center punch is often unnecessary for general work.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat sizes are included?\u003c\/strong\u003e\u003cbr\u003eThe set includes 31 jobber length sizes covering commonly used diameters from 1\/16in through 1\/2in stored in a plastic case.\u003c\/p\u003e","brand":"amoolo","offers":[{"title":"Default Title","offer_id":48196563566811,"sku":"B09MHD3QRM","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/91gtRRJgzLL._AC_SL1500.jpg?v=1770268234","url":"https:\/\/gearmusthave.com\/products\/amoolo-cobalt-drill-bit-set-31pcs-1-16in-1-2in-m35-high-speed-steel","provider":"GearMustHave","version":"1.0","type":"link"}