Countersink Insert (replacement for Modular Drill & Driver)

Pre-drill and countersink to drive screws flush with the material surface or deep hole counter boring for driving screw heads below the surface. Ultra-sharp cutting flute clears chips efficiently and leaves a clean, smooth hole. Adjustable drill bit length for desired screwed depth, and features a flattened shank for a no-slip countersink connection. Product Features: Replaces countersink drill for Modular Drill & Driver. Countersink or counter bore clean, smooth holes for screws and fasteners Power groove 1/4" hex shank is quick change and impact drill/driver compatible For use in wood and plastic Made in the USA From our engineers: Correct size plug cutter as companion to the countersink inserts #6 countersink  is a 3/32” drill with a countersink diameter of 5/16. This would use a 5/16 plug cutter #8 countersink is a 7/64” drill with a countersink diameter of 5/16. This would use a 5/16 plug cutter #10 countersink is a 1/8” drill with a countersink diameter of 3/8”. This would