- Drill, countersink and drive screw with one bit
- Drill a clearance hole, countersink the timber and drive the screw
- Up to 50% faster for cabinet joinery and decking
- Carbide tipped countersink teeth
20RDDC (I/N 1205060) Countersink Set. The big advantage is that you can both drill and countersink a 4.8mm hole. The drill bit can then be used to drive the screw, saving time. The drill bit has a #2 Phillips head. No need for 2 tools to complete one job. Drill a clearance hole and drive the screw. Ideal for cabinet joinery and decking to join 2 pieces of timber.