27/64" Counterbore (For GC121 Bearing) K381 Package of 10

Package of 10

Choose the pilot to fit the shank diameter of your pivot pin

Sand until you are happy with the finish

Sold Individually or as an 8 piece set

# OPENING DEPTH CL403 1 1/2" 1 1/8"

27/64" Counterbore (For GC121 Bearing) K381 Package of 10Quality high speed counterbores used to set your GTC bearing system. Select your counterbore for your chosen size ( outside diameter of the bearing). Then choose the pilot to fit the shank diameter of your pivot pin. Proper cutting depths are 0. 50" for all bearings except GC102 with a cutting depth of 0. 66". 27 64" counterbore for CG121 bearing system. Choose your preferred pilot shank.