{"product_id":"irwin-1890721-straight-shank-installer-wood-drill-bit","title":"Irwin 1890721 Straight Shank Installer Wood Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe IRWIN 1890721 is a straight shank installer drill bit designed for boring through wood framing and structural members during low-voltage wiring, cable, or conduit installation. The straight shank design allows it to seat directly in standard drill chucks without adapters. At 3\/8 inch in diameter and 3 inches in length, it is sized for routing wires and cables through typical residential and light commercial framing. Electricians, HVAC installers, and low-voltage technicians rely on this bit type when running wire through joists, studs, and top plates.\u003c\/p\u003e\n\u003cp\u003eThis installer bit is suited for wood-frame construction where penetrations must be drilled quickly and cleanly for wire or cable passage. It is a standard single-piece tool used in residential and light commercial applications. The 3\/8 inch diameter is a common size for routing communication cable, thermostat wire, and control wiring through framing lumber without requiring oversized clearance holes.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eStraight shank seats in standard 3-jaw drill chucks without adapters\u003c\/li\u003e\n  \u003cli\u003e3\/8 inch diameter sized for wire and cable routing penetrations\u003c\/li\u003e\n  \u003cli\u003e3 inch length suited for drilling through standard dimensional lumber\u003c\/li\u003e\n  \u003cli\u003eDesigned for installer applications in wood-frame construction\u003c\/li\u003e\n  \u003cli\u003eSold as a single unit for individual replacement or tool inventory\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard straight shank installer drill bit compatible with any drill accepting a 3\/8 inch or larger keyed or keyless chuck.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis bit is installed and used by electricians, HVAC technicians, and low-voltage installers drilling wire-routing holes through wood framing. Ensure the drill is powered off and chuck is fully secured before beginning work. Follow NEC and local code requirements for minimum clearance between drilled holes and the edge of framing members when routing electrical conductors. Wear appropriate eye protection during drilling operations.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter\u003c\/strong\u003e: 3\/8 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Wood\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUnit of Measure\u003c\/strong\u003e: Each\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity per Unit\u003c\/strong\u003e: 1\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: 1890721\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IRWIN","offers":[{"title":"Default Title","offer_id":51561790406962,"sku":"1890721","price":87.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c9642e1b1e085783f6bc28ff22146ba8.jpg?v=1786468804","url":"https:\/\/voomisupply.com\/products\/irwin-1890721-straight-shank-installer-wood-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}