{"product_id":"dewalt-3-1-2-in-bi-metal-hole-saw","title":"DEWALT 3-1\/2 in. Bi-Metal Hole Saw","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eDEWALT 3-1\/2 in. Bi-Metal Hole Saw\u003c\/strong\u003e is built for bold openings and dependable performance across materials. With a 3-1\/2\" cutting diameter and a 1.75\" cutting depth, this bi-metal hole saw is ready to tackle large holes in metal, wood, and certain plastics with precision and durability.\u003c\/p\u003e \u003ch3\u003eWhy this hole saw stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBi-metal construction\u003c\/strong\u003e combines tough cutting teeth with a flexible back, delivering longer life and resistance to tooth wear when drilling through stubborn materials.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eLarge diameter, deep cut\u003c\/strong\u003e capability makes it ideal for conduit and pipe openings, electrical work, and bulkier hardware installations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatility in one tool\u003c\/strong\u003e — suitable for metal, wood, and select plastics, helping you reduce tool swaps on job sites.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eArbor not included\u003c\/strong\u003e so you can pair it with the arbor that fits your drill setup (sold separately) and your preferred quick-change system, if applicable.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompact package count\u003c\/strong\u003e — 1 piece per package, ready to load into your drill kit for on-site projects.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eSpecifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 3-1\/2 in\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCutting Depth:\u003c\/strong\u003e 1.75 in\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Bi-Metal\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber in Package:\u003c\/strong\u003e 1\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eArbor Included:\u003c\/strong\u003e No\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e DeWalt\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal for whom and what problems it solves\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eElectricians running conduit openings in metal studs or panels, plumbers creating clean access for pipes, and installers needing large holes quickly and cleanly.\u003c\/li\u003e \u003cli\u003eCarpenters and DIY enthusiasts tackling projects that require sizable, accurate holes without compromising material integrity.\u003c\/li\u003e \u003cli\u003eUsers seeking a durable, long-lasting hole saw that maintains a sharp edge through repeated drilling sessions.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical tips for best results\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eConfirm you have a compatible arbor for your drill setup before use, since this item ships without an arbor.\u003c\/li\u003e \u003cli\u003eKeep the work surface steady and start at a steady pace to establish a clean cut, then increase speed as needed for the material you're drilling.\u003c\/li\u003e \u003cli\u003eUse steady, perpendicular pressure and avoid forcing the tool to reduce wear and heat buildup.\u003c\/li\u003e \u003cli\u003eFor metal drilling, consider light lubrication or cutting oil to extend tooth life and reduce galling.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoose the DEWALT 3-1\/2 in. Bi-Metal Hole Saw for reliable, large-diameter cutting capability that stands up to professional use. It’s a purpose-built solution for large openings, designed to deliver consistent results when accuracy matters and time is of the essence.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Dewalt","offers":[{"title":"Default Title","offer_id":52272854401298,"sku":"2032090","price":18.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0928\/1024\/8466\/files\/2032090_A.eps_High.jpg?v=1778782983","url":"https:\/\/nationalhardwaregroup.com\/products\/dewalt-3-1-2-in-bi-metal-hole-saw","provider":"National Hardware Group","version":"1.0","type":"link"}