1/2" hex collars are Insty-Drive adaptable
Each countersink comes with a Regency Drill Bit
1/4" hex power shank is designed to drill flush or counter-bored holes for wood screws in wood and composite board
NOTE: Body is round; will not work with Drill ’N Drive Sleeve No. 62521.
CAUTION: Any cutting tool may break or shatter under improper use. Government regulations require use of safety glasses and other appropriate safety equipment at all times in the vicinity of use.