{"product_id":"hertel-sd63361752-step-drill-bit-7-8-inch-hss-black-oxide","title":"Hertel SD63361752 Step Drill Bit 7\/8 Inch Hss Black Oxide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL SD63361752 is a single-step drill bit designed to drill a fixed hole diameter of 7\/8 inches in a single pass. Built from M2 high-speed steel with a black oxide coating, this bit delivers general-purpose performance across metal, plastic, and similar materials commonly encountered in HVAC, electrical, and plumbing rough-in work. The quick-change cylindrical shank with two flats measures 1\/4 inch in diameter, making it compatible with standard quick-change chuck systems. Overall length is 2.25 inches, and the step length is 1\/8 inches. Licensed tradespeople and experienced DIYers use this bit when punching consistent, single-size holes in sheet metal panels, electrical boxes, and conduit knockouts.\u003c\/p\u003e\u003cp\u003eThis step drill bit suits residential and light commercial trade applications where a repeatable 7\/8-inch hole is required. Common uses include drilling knockout holes in electrical enclosures, sheet metal HVAC plenums, and thin-gauge steel or aluminum panels. The straight flute geometry and black oxide finish help reduce friction and extend service life under general-purpose cutting conditions. The single-step design keeps the tool compact and easy to handle in tight installation spaces.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSingle hole size: fixed 7\/8 inch diameter for consistent, repeatable results\u003c\/li\u003e\n\u003cli\u003eM2 high-speed steel construction for durability in metal and multi-material drilling\u003c\/li\u003e\n\u003cli\u003eBlack oxide coating reduces friction and provides corrosion resistance\u003c\/li\u003e\n\u003cli\u003eQuick-change cylindrical shank with two flats for secure, fast chuck engagement\u003c\/li\u003e\n\u003cli\u003eStraight flute geometry suits general-purpose and multipurpose cutting tasks\u003c\/li\u003e\n\u003cli\u003eCompact 2.25-inch overall length for use in confined work areas\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a general-purpose single-step drill bit compatible with standard 1\/4 inch quick-change chuck systems used in handheld drills and drill presses common to HVAC, electrical, and plumbing trade work.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis bit is installed and used by electricians, HVAC technicians, and plumbers for sheet metal and enclosure work. Always ensure the workpiece is securely clamped before drilling. Confirm the drill chuck is rated for the shank size and that the quick-change collar is fully seated before operation. Wear appropriate eye protection and gloves when drilling metal.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: High-Speed Steel (M2)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Black Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 7\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Cylindrical Quick Change\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flats\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Straight\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep Length\u003c\/strong\u003e: 1\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Hole Sizes\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Performance\u003c\/strong\u003e: General Purpose\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: HSTH-OX\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.17 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: HERTEL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: SD63361752\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51745982677298,"sku":"SD63361752","price":74.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1387a1cbc85e69f037e155e448d18e22_58ce505f-c91a-4145-a92c-fd4f8119a4ac.jpg?v=1788866306","url":"https:\/\/voomisupply.com\/products\/hertel-sd63361752-step-drill-bit-7-8-inch-hss-black-oxide","provider":"Voomi Supply","version":"1.0","type":"link"}