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Tapered drill with widened flutes drills fast, clean pilot holes and ensures a tight fit for screws. Four-cutter counterbore attaches to flats on shank with two hex screws for a secure fit and can be adjusted for controlled pilot hole depth. It cuts and clears chips quicker for fast, smooth countersinking. The 1/4" quick-change shank reduces slipping in standard chucks and is compatible with all 1/4" quick-change chucks, including impact drills.
Shank: 1/4" quick-change
Includes
#4 1/4"
#6 7/32"
#8 3/16"
#10 11/64"
#12 9/64"
#14 7/64"
2 adjustable depth stops