Irwin 1882791 Replacement Drill Bit, 1/4 in Dia, Countersink, Widened Flute, 1/4 in Dia Shank

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Tapered drill with widened flutes for drilling fast, clean pilot holes. 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. Adjustable four-cutter counterbore cuts and clears chips quicker for fast, smooth countersinking. Counter bore attaches to flats on shank with two hex screws for a secure fit and can be adjusted for controlled pilot hole depth. Tapered pitch nose improves clearance and stability Adjustable four-cutter counterbore cuts and clears chips quicker for fast, smooth counter sinking 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 Show more