{"product_id":"m35-four-spiral-flute-step-drill-bit-set-1-8ft-7-8ft-high-durability","title":"M35 Four Spiral Flute Step Drill Bit Set 1\/8ft-7\/8ft - High Durability","description":"\u003cp\u003eOur review of the M35 Four Spiral Flute Step Drill Bit Set finds it best suited to DIYers and tradespeople who need a reliable multi-size bit that handles tougher metals as well as softer materials. The single biggest reason to buy is the M35 cobalt construction combined with a four-flute design and new TiAlN coating, which together deliver longer life and cleaner, faster cuts when drilling through stainless steel, aluminum, wood or plastic. The set simplifies hole sizing with 34 steps across three bits and includes a 1\/4' hex shank for secure fit in standard chucks and impact drivers.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM35 Cobalt Superhard Steel:\u003c\/strong\u003e Provides high wear and heat resistance so the bits stay sharp longer when cutting stainless steel and other hard metals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour Spiral Groove Design:\u003c\/strong\u003e Four cutting blades and spiral flutes remove chips efficiently for smoother, faster drilling and reduced clogging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTiAlN Coating:\u003c\/strong\u003e A modern coating increases surface hardness and reduces friction, improving thermal performance under heavy use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Range of Sizes:\u003c\/strong\u003e Thirty four step sizes across the three bits let you drill multiple hole diameters without swapping tools for many common tasks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/4' Hex Shank:\u003c\/strong\u003e Hex shank provides secure grip in drills and impact drivers so the bit resists slipping during high-torque work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomer Support Warranty:\u003c\/strong\u003e The seller offers responsive support and a warranty policy that promises refund or replacement if the hex shank breaks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe set is ideal for homeowners, metalworkers and fabricators who need a compact solution for drilling a variety of hole sizes in thin stainless steel, aluminum, plastics and wood. It is especially useful when you want to avoid swapping individual twist bits for incremental sizes because the step design covers multiple diameters in one tool.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include users who must drill deep holes through very thick plate or masonry, or those needing precision tolerance holes for machine parts where a dedicated twist or reamer per diameter is preferred. For very soft materials where shredding is a concern, separate specialized bits may still be better.\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 wear resistance from M35 cobalt steel that keeps edges sharper during repeated metal work.\u003c\/li\u003e\n\u003cli\u003eFour-flute geometry and TiAlN coating combine for smooth cuts and efficient chip evacuation.\u003c\/li\u003e\n\u003cli\u003eWide size coverage across three bits reduces the need to change bits for many common hole diameters.\u003c\/li\u003e\n\u003cli\u003eHex shank fits securely in impact drivers for faster jobsite use and easier bit changes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStep bits are intended for thinner materials; cutting through very thick stock requires different drill bits or multiple passes.\u003c\/li\u003e\n\u003cli\u003eThe stepped design gives less precision for tolerance-critical holes compared with individual ground twist or reamer tools.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eM35 cobalt high speed steel (SKH55)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eTiAlN industrial-grade coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Type\u003c\/td\u003e\n\u003ctd\u003e1\/4' hex shank\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize Coverage\u003c\/td\u003e\n\u003ctd\u003e34 sizes across three step bits (1\/8' to 7\/8' ranges)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlute Design\u003c\/td\u003e\n\u003ctd\u003eFour spiral cutting blades\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Materials\u003c\/td\u003e\n\u003ctd\u003eStainless steel, aluminum, wood, plastic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\/Support\u003c\/td\u003e\n\u003ctd\u003eResponsive support with refund or replacement if hex shank breaks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe M35 Four Spiral Flute Step Drill Bit Set is a durable, versatile option for users who frequently drill a range of hole sizes in sheet metal and general workshop materials. Its cobalt construction, four-flute design and TiAlN coating deliver noticeably smoother cutting and longer life than common HSS step bits, offering solid value for DIYers and light industrial use. Choose this set when you want fewer bit changes and reliable performance on tougher metals.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan these step bits cut stainless steel?\u003c\/strong\u003e\u003cbr\u003eYes. The M35 cobalt composition and TiAlN coating are designed to handle stainless steel and other hard metals when used on appropriately thin stock.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill the 1\/4' hex shank fit impact drivers?\u003c\/strong\u003e\u003cbr\u003eYes. The 1\/4' hex shank is compatible with standard drill chucks and impact drivers for secure use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow many hole sizes do the set cover?\u003c\/strong\u003e\u003cbr\u003eThe three bits include a total of 34 step sizes covering ranges from about 1\/8' up to 7\/8' to meet many everyday drilling needs.\u003c\/p\u003e","brand":"BOYOUYS","offers":[{"title":"Default Title","offer_id":48612709728475,"sku":"B0BLVC7TKF","price":59.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71wst8fCJ6L._SL1500.jpg?v=1778367961","url":"https:\/\/gearmusthave.com\/products\/m35-four-spiral-flute-step-drill-bit-set-1-8ft-7-8ft-high-durability","provider":"GearMustHave","version":"1.0","type":"link"}