{"product_id":"irwin-373212bx-bi-metal-hole-saw-2-5-inch","title":"Irwin 373212BX Bi-metal Hole Saw 2.5 Inch","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe IRWIN 373212BX is a bi-metal hole saw designed for cutting through a wide range of materials including wood, aluminum, copper, iron, stainless steel, and zinc. At 2.5 inches in diameter, it is a versatile size suited for trade work across multiple disciplines. The bi-metal construction combines a hardened tooth edge with a flexible backing body, allowing the saw to handle both soft and hard materials without premature tooth failure. Licensed tradespeople and experienced DIYers use this saw when a clean, consistent bore is needed through mixed or unknown substrate conditions.\u003c\/p\u003e\n\u003cp\u003eThis hole saw is commonly used in plumbing, electrical, and HVAC rough-in work where consistent-diameter holes are required through wall framing, sheet metal enclosures, and light structural members. At 2.5 inches, it covers a common knockout and pipe-pass-through size in residential and light commercial installations. It is sold individually and fits standard arbors compatible with IRWIN Marathon series hole saw bodies.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBi-metal construction for cutting wood, aluminum, copper, iron, stainless steel, and zinc\u003c\/li\u003e\n  \u003cli\u003e2.5 inch diameter covers common pipe and conduit pass-through sizes\u003c\/li\u003e\n  \u003cli\u003eRated operating speed of 135 RPM for controlled, clean cuts\u003c\/li\u003e\n  \u003cli\u003eFlexible steel body resists cracking and warping under load\u003c\/li\u003e\n  \u003cli\u003eCompatible with standard Marathon series arbors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct addition to IRWIN Marathon series hole saw sets. Fits standard hole saw arbors used across residential and light commercial trade applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eA licensed electrician, plumber, or HVAC technician typically installs this saw as part of rough-in drilling work. Secure the workpiece before cutting and use the appropriate arbor with a center pilot bit to prevent wandering. Always wear eye protection and ensure the drill is set to the correct RPM range before engaging the saw. Reduce speed when transitioning between soft and hard materials to extend tooth life.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Operating Speed\u003c\/strong\u003e: 135 RPM\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConstruction\u003c\/strong\u003e: Bi-Metal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Materials\u003c\/strong\u003e: Wood, aluminum, copper, iron, stainless steel, zinc\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.3 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUnit of Measure\u003c\/strong\u003e: Each\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: IRWIN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 373212BX\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IRWIN","offers":[{"title":"Default Title","offer_id":51347381190962,"sku":"373212BX","price":66.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310499628.jpg?v=1782103223","url":"https:\/\/voomisupply.com\/products\/irwin-373212bx-bi-metal-hole-saw-2-5-inch","provider":"Voomi Supply","version":"1.0","type":"link"}