1" 60° HSS 3-Flute Countersink 60° 4-Flute Countersinks are commonly used to countersink

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

These are jobber (standard) length drill bits with a black and gold surface treatment

Ideal for extended reach

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

These are jobber (standard) length drill bits with a 1/4" Hex Shank for quick change impact drivers

1" 60° HSS 3-Flute Countersink 60° 4-Flute Countersinks are commonly used to countersinkSpecifications SIZE 1" OVERALL LENGTH 3 1 2" MATERIAL HIGH SPEED STEEL FINISH UNCOATED (BRIGHT) SHANK DIAMETER 1 2" NUMBER OF FLUTES 3 SHANK TYPE ROUND CUTTING ANGLE 60 SUGGESTED PACK QTY 1 3 flute countersinks, also known as center reamers, are commonly used to countersink holes for centers or to enlarge existing holes.