Replacement Countersinks with Slow Spiral Drills
55271 Replacement Carbide Tipped Countersink with Slow Spiral HSS M2 Drill for #4 Size Screw 3/32 Drill Dia x 1/4 Hex Shank for #55225 Adjustable No-Thrust Countersink
Drill pilot hole and tapered countersink for wood screws. Carbide tipped for long lasting results in hard wood, plywood, plastics, etc.