4 times Faster than standard drilling an driving applications. Drill, countersink or counter bore, then release the locking collar and flip the reversible countersink insert and drive the screw.Modular Drill and Driver Set contains: 1 Contractor Drill & Drive Body with Built-in hex key; 1#8x 7/64" Reversible Countersink Insert; 3 Countersinks:#6 x 3/32", # 10 x 1/8", # 12 x 1/8", 5-1" Insert Bits: 1 x P1, 3 x P2, 1 x P3; 11 pieces pluscase
