Irwin #10 3/16" Replacement Bit For Wood Countersink 1882789

#10 3/16 Inch Replacement Bit for Wood Countersink. Tapered drill with widened flutes for drilling fast, clean pilot holes. 1/4 inch quick change shank reduces slipping in standard chucks and is compatible with all 1/4 inch 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 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