1" 60° HSS 4-Flute Countersink 60° Single-Flute Countersinks are commonly used to countersink

are commonly used to countersink holes for centers or to enlarge existing holes

while the high red hardness allows for drilling speeds up to 30% faster than standard M2 HSS

high-tensile strength materials such as aluminum

The SDS-Plus shank is designed for use with SDS-Plus drills only

1" 60° HSS 4-Flute Countersink 60° Single-Flute Countersinks are commonly used to countersinkSpecifications SIZE 1" OVERALL LENGTH 4 3 8" MATERIAL HIGH SPEED STEEL FINISH UNCOATED (BRIGHT) SHANK DIAMETER 1 2" NUMBER OF FLUTES 4 SHANK TYPE ROUND CUTTING ANGLE 60 SUGGESTED PACK QTY 1 4 flute countersinks, also known as machine countersinks, can be used to enlarge existing holes. All 4 flute countersinks have a 1 2 inch shank.