1" 60° HSS 3-Flute Countersink 60° 4-Flute Countersinks These are jobber (standard) length

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

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

and titanium and their high red hardness allows for quicker and cleaner holes when compared to conventional M2 drills

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

1" 60° HSS 3-Flute Countersink 60° 4-Flute Countersinks These are jobber (standard) lengthSpecifications 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.