{"product_id":"irwin-1877791-countersink-set-black-oxide-hss-5-piece","title":"Irwin 1877791 Countersink Set Black Oxide Hss 5 Piece","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe IRWIN INDUSTRIAL TOOL CO 1877791 is a 5-piece countersink set designed for drilling countersunk pilot holes in wood, composite, and similar materials. Each bit in the set features a high-speed steel (HSS) construction with a black oxide coating that reduces friction and extends tool life. The assorted sizing across the five pieces makes this set suitable for a range of fastener diameters and countersink depths. It is a practical addition to a working tool kit for carpenters, finish installers, millwork contractors, and general tradespeople who need clean countersunk holes on the job.\u003c\/p\u003e\u003cp\u003eThis countersink set is used in residential and light commercial construction and finish work, including cabinet installation, door hardware, decking, and trim work. The assorted configurations allow a single set to cover the most common wood screw sizes encountered in typical installation tasks. Tradespeople who regularly drive flush or recessed fasteners will find the variety of sizes useful across multiple applications on a single job site.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e5-piece assorted countersink set covers a range of common fastener sizes\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel (HSS) construction for durability and cutting performance\u003c\/li\u003e\n\u003cli\u003eBlack oxide coating reduces friction and provides corrosion resistance\u003c\/li\u003e\n\u003cli\u003eSuitable for wood, composite, and similar soft materials\u003c\/li\u003e\n\u003cli\u003eCompact set format for easy storage and transport in a tool bag or case\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a general-purpose countersink set compatible with standard drill chucks for use in cordless or corded drills commonly used in finish carpentry and construction trades.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eCountersink bits are installed and removed by a licensed or qualified tradesperson using a standard keyed or keyless chuck. Always ensure the drill is powered off and the chuck is fully tightened before operation. Use appropriate speed settings for the material being drilled to avoid overheating the bit or tearing out the workpiece surface.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePiece Count\u003c\/strong\u003e: 5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBit Material\u003c\/strong\u003e: High-Speed Steel (HSS)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Black Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.88 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit of Measure\u003c\/strong\u003e: EA\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: IRWIN INDUSTRIAL TOOL CO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1877791\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IRWIN","offers":[{"title":"Default Title","offer_id":51557350801714,"sku":"1877791","price":397.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a1e74a2704fb68bec3364e52fc181041.jpg?v=1786386140","url":"https:\/\/voomisupply.com\/products\/irwin-1877791-countersink-set-black-oxide-hss-5-piece","provider":"Voomi Supply","version":"1.0","type":"link"}