{"product_id":"18pcs-bi-metal-hole-saw-set-3-4in-2-3-4in-m42-cobalt","title":"18pcs Bi-Metal Hole Saw Set 3\/4in-2-3\/4in - M42 Cobalt","description":"\u003cp\u003eOur review of the 18pcs Bi-Metal Hole Saw Set finds it best suited to homeowners, tradespeople and DIYers who need a single, compact kit to cut a wide range of hole sizes in metal and softer materials. The single biggest reason to buy is the M42 bi-metal construction with 8% cobalt and a fleam ground tooth profile, which delivers faster cuts and longer life than ordinary hole saws when used on stainless, iron and alloys. The kit is practical for repetitive work because it includes multiple saw sizes, two pilot drills and a sturdy carrying case for organization.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM42 bi-metal construction:\u003c\/strong\u003e Provides faster cutting and improved wear resistance for drilling through hard metals and alloys.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTurtle back tooth configuration:\u003c\/strong\u003e Offers heavy duty cutting performance so aggressive material removal stays consistent under load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide slot side design:\u003c\/strong\u003e Improves visibility while cutting and helps chip evacuation to reduce clogging in deeper cuts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFleam ground teeth:\u003c\/strong\u003e Deliver smoother, quicker cuts and extend tooth life when used on stainless steel and cast iron.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComprehensive size range:\u003c\/strong\u003e Eleven saw blades from 3\/4in to 2-3\/4in mean fewer tool changes for varied installations like locks, lights and pipe passages.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo pilot drills and adapters:\u003c\/strong\u003e Ensure accurate starting points and compatibility with larger mandrels for reliable hole placement.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis set suits homeowners and light trade users who need versatile hole cutting for door hardware, LED recesses, plumbing and general workshop tasks. The included sizes cover common needs without buying single saws separately, and the M42 teeth help when cutting thin stainless and other metals.\u003c\/p\u003e\u003cp\u003eIt is less appropriate for heavy industrial production where carbide-tipped cutters or purpose-built machines are required, or for users who need depths beyond the 1-7\/8in cutting depth specified for these saws.\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 cutting accuracy and faster performance thanks to M42 cobalt teeth and fleam grinding.\u003c\/li\u003e\n\u003cli\u003eWide range of sizes and two pilot drills provide flexibility for many projects.\u003c\/li\u003e\n\u003cli\u003eWide slot design helps chip removal and visibility during cutting.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDurability is mixed in user reports, so heavy continuous production use may expose wear earlier than premium industrial cutters.\u003c\/li\u003e\n\u003cli\u003eCutting depth is limited to 1-7\/8in, which may not suit thicker workpieces.\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\u003eHighfire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eM42 bi-metal with 8% cobalt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCutting depth\u003c\/td\u003e\n\u003ctd\u003e1-7\/8in (48mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded sizes\u003c\/td\u003e\n\u003ctd\u003e11 saw blades 3\/4in to 2-3\/4in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage contents\u003c\/td\u003e\n\u003ctd\u003e11 saws, 2 mandrels\/adapters, 2 pilot drills, carrying case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKerf thickness\u003c\/td\u003e\n\u003ctd\u003e0.05in design\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBacking plate\u003c\/td\u003e\n\u003ctd\u003e3\/16in (5mm) heavy duty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe 18pcs Bi-Metal Hole Saw Set is a solid value for DIYers and light trade users who need a versatile kit capable of cutting through metal, wood and plastics. Its M42 cobalt teeth and wide slot design make it effective for tougher materials, while the variety of sizes and included pilots reduce tool changes. For those needing industrial longevity or deeper cuts, looking at heavier duty solutions is advised.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eCan these saws cut stainless steel?\u003c\/strong\u003e\u003cbr\u003eYes, the M42 bi-metal composition with fleam ground teeth is designed to cut thin stainless and similar alloys effectively.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the maximum cutting depth?\u003c\/strong\u003e\u003cbr\u003eThe saws offer approximately 1-7\/8in (48mm) cutting depth per blade.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre pilot drills and adapters included?\u003c\/strong\u003e\u003cbr\u003eYes, the kit includes two pilot drills, a small mandrel, a large mandrel with adapter, and two additional adapters for fitment.\u003c\/p\u003e","brand":"Highfire","offers":[{"title":"Default Title","offer_id":48632418304219,"sku":"B0CYGWF41Q","price":49.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/819bsnTGb2L._SL1500.jpg?v=1778500644","url":"https:\/\/gearmusthave.com\/products\/18pcs-bi-metal-hole-saw-set-3-4in-2-3-4in-m42-cobalt","provider":"GearMustHave","version":"1.0","type":"link"}