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IRWIN 1882789 Replacement Countersink Bit, 3/16 in Dia, Countersink, Widened Flute, 1/4 in Dia Shank
- 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
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