{"product_id":"hertel-sdd43274562-step-drill-bit-cobalt-9-hole-sizes","title":"Hertel SDD43274562 Step Drill Bit Cobalt 9 Hole Sizes","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HERTEL SDD43274562 is a cobalt step drill bit designed for drilling multiple hole sizes in a single operation. Built from cobalt high-speed steel, it delivers the heat resistance and edge retention needed when working through hardened steel, stainless, and other tough materials. The bit covers nine hole sizes ranging from 4 mm to 12 mm in 5 mm step increments, with a bright uncoated finish. The 6.5 mm round shank features three flats to prevent slipping in the chuck. This bit is suited for electricians, pipefitters, HVAC technicians, and sheet metal workers who need clean, accurate step-drilled holes without changing bits.\u003c\/p\u003e\n\u003cp\u003eThis step drill bit is used in metal fabrication, electrical panel work, conduit knockout applications, and HVAC sheet metal installations. It is effective on steel sheet, thin plate, and similar materials where stepped holes are required. The nine-step range from 4 mm to 12 mm makes it a practical single-tool solution for tradespeople drilling multiple hole sizes in one layout pass.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCobalt construction for high heat resistance and extended tool life in hard materials\u003c\/li\u003e\n  \u003cli\u003eNine hole sizes in a single bit, ranging from 4 mm to 12 mm\u003c\/li\u003e\n  \u003cli\u003e5 mm step length for controlled, incremental cutting\u003c\/li\u003e\n  \u003cli\u003e6.5 mm round shank with three flats prevents chuck slip during use\u003c\/li\u003e\n  \u003cli\u003eBright uncoated finish suited for general-purpose metal drilling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a general-purpose step drill bit compatible with standard 3-jaw drill chucks accepting a 6.5 mm round shank with flats.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis bit is installed and used by electricians, HVAC technicians, and pipefitters working with drill presses or hand-held power drills. Secure the shank firmly in a drill chuck before operation and confirm the workpiece is clamped or secured. Use appropriate cutting fluid or lubricant when drilling hardened or stainless steel to preserve edge life. Follow all applicable workplace safety standards when operating rotary cutting tools.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Round with Flats\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flats\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 6.5 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Hole Diameter\u003c\/strong\u003e: 4 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Hole Diameter\u003c\/strong\u003e: 12 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Hole Sizes\u003c\/strong\u003e: 9\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStep Length\u003c\/strong\u003e: 5 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating \/ Finish\u003c\/strong\u003e: Bright \/ Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.0486 pounds\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: HERTEL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: SDD43274562\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51732715307314,"sku":"SDD43274562","price":65.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/247228136c4f52c06679ed1e38406d88.jpg?v=1788745975","url":"https:\/\/voomisupply.com\/products\/hertel-sdd43274562-step-drill-bit-cobalt-9-hole-sizes","provider":"Voomi Supply","version":"1.0","type":"link"}