2" 60° HSS 6-Flute Chatterless Countersink 12" Cobalt Aircraft Fractional Drills They have a 1/4" Hex

They have a 1/4" Hex Shank that can be used in quick change impact drivers

PILOT SIZE "A" DECIMAL EQUIVALENT

1590" BODY DIAMETER 1/2" MATERIAL HIGH SPEED STEEL THREAD SIZE 1/4-28 CUTTING ANGLE 100° SUGGESTED PACK QTY 1

Jobber (standard) length drill bit

The 4-Flute Cross Tip design reduces vibrations and allows for faster dust removal

2" 60° HSS 6-Flute Chatterless Countersink 12" Cobalt Aircraft Fractional Drills They have a 1/4" HexSpecifications SIZE 2" OVERALL LENGTH 4 3 8" MATERIAL HIGH SPEED STEEL FINISH UNCOATED (BRIGHT) SHANK DIAMETER 1" NUMBER OF FLUTES 6 SHANK TYPE ROUND CUTTING ANGLE 60 SUGGESTED PACK QTY 1 6 flute countersinks, also known as chatterless countersinks, are designed to remove more metal compared to countersinks with fewer flutes. They are also more effective on harder materials and provide a more chatter free cut.