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 screw depth, and features a flattened shank for a no-slip countersink connection.

• Replacement Drill bits for countersinks, and modular 4-in-1 Drill & Driver
• Precision ground with flattened shank to prevent "spin out"

• Two drill bit set screws to secure in the countersink. (1) #10/12 Compact Replacement Drill Bit.

• Country of Origin: USA
• Weight: 0.11 lbs