![IRWIN INDUSTRIAL TOOL Tapered Countersink Replacement Bit #10](http://jaxgoods.com/cdn/shop/products/wood-countersinks-replacement-bits-1663_34c4b6e6-22fb-43c4-8c52-59bc06fe8bbd_320x320.jpg?v=1686267851)
Tapered Countersink Replacement Bit #10
Tapered drill with widened flutes for drilling fast, clean pilot holes.. Adjustable four-cutter counterbore cuts and clears chips quicker for fast, smooth countersinking. Counterbore attaches to flats on shank with two hex screws for a secure fit, and can be adjusted for controlled pilot hole depth. 1/4 in. quick-change shank reduces slipping in standard chucks and is compatible with all 1/4 in. quick-change chucks, including impact drills.