{"product_id":"lenox-1772778-hole-saw-1-7-8-in-bi-metal-variable-pitch","title":"Lenox 1772778 Hole Saw 1-7\/8 in Bi-metal Variable Pitch","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe LENOX 1772778 is a bi-metal hole saw designed for cutting through metal and similar hard materials in trade and industrial applications. It measures 1-7\/8 inches in saw diameter with a cutting depth of 1-9\/16 inches. The toothed cutting edge uses a variable pitch pattern, which helps reduce vibration and chatter during cuts and extends blade life across a range of material thicknesses. The arbored design accepts a 1\/4-inch shank arbor for secure chuck mounting. Licensed tradespeople and skilled technicians in HVAC, plumbing, and electrical work rely on this type of hole saw for conduit knock-outs, pipe penetrations, and panel openings.\u003c\/p\u003e\u003cp\u003eThis hole saw is suited for residential and light commercial trade work where consistent, clean holes through metal are required. Typical applications include cutting through electrical enclosures, sheet metal duct work, junction boxes, and metal framing members. The 1-7\/8-inch diameter is a common size for conduit and pipe rough-in work. The compact cutting depth of 1-9\/16 inches makes it practical for thinner stock and layered assemblies common in mechanical and electrical rough-in scenarios.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1-7\/8-inch saw diameter suits common conduit and pipe penetration sizes\u003c\/li\u003e\n\u003cli\u003e1-9\/16-inch cutting depth handles sheet metal and thin structural stock\u003c\/li\u003e\n\u003cli\u003eBi-metal construction provides durability and resistance to heat buildup during metal cutting\u003c\/li\u003e\n\u003cli\u003eVariable pitch tooth pattern reduces vibration and extends blade service life\u003c\/li\u003e\n\u003cli\u003eArbored design with 1\/4-inch shank for secure, centered chuck engagement\u003c\/li\u003e\n\u003cli\u003eToothed cutting edge delivers clean hole edges in metal applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or standard trade hole saw compatible with 1\/4-inch arbored mandrels and standard drill chuck setups used across HVAC, plumbing, and electrical hole saw applications in metal materials.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by licensed electricians, HVAC technicians, and plumbers using a standard drill or drill press. Always de-energize and lock out any electrical panel or equipment before cutting into enclosures or near live conductors per NEC guidelines. Secure the workpiece firmly before cutting to prevent rotation or movement. Use appropriate cutting fluid or lubricant on metal stock to reduce heat and extend blade life.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSaw Diameter\u003c\/strong\u003e: 1-7\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Depth\u003c\/strong\u003e: 1-9\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSaw Material\u003c\/strong\u003e: Bi-Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Edge Style\u003c\/strong\u003e: Toothed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePitch Pattern\u003c\/strong\u003e: Variable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1\/4 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArbored\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.38 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27112826\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: LENOX\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1772778\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"LENOX","offers":[{"title":"Default Title","offer_id":51541846491442,"sku":"1772778","price":26.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/fd73d6e59320a1afc5a6d5f478e458d7.jpg?v=1785886661","url":"https:\/\/voomisupply.com\/products\/lenox-1772778-hole-saw-1-7-8-in-bi-metal-variable-pitch","provider":"Voomi Supply","version":"1.0","type":"link"}