SHARS 15PC HSS Center Drill Set 60° Combined Countersink #1,2,3,4, 4-1/2,5 !}
DRILL CATEGORYCombined Drill & Countersink. DRILL STYLECombined Drill & Countersink. HSS material provides good wear resistance in mild steel and non-ferrous materials such as plastics, aluminum, copper, brass, bronze, rubber and wood.