General 34ST Adjustable Pilot Bits, Set of Four
Each tool in the 34ST Adjustable Pilot Bits, Set of Four can drill, countersink and counterbore a precision screw hole in one step.
FeaturesMade of hardened high-speed steel Black oxide finish deters rust 1/4 in. hex shanks prevent slippage in electric drills and allow use in power screwdrivers
SpecificationsFor screw sizes 6-7 (3/32 in.), 8-9 (7/64 in.), 10-11 (1/8 in.) and 12-14 (9/64 in.)