27/64" Counterbore (For GC121 Bearing) steak blade cutting or slicing

cutting or slicing

Black Widow and Hi-Tech folders as well as other large folder blades using ambidextrous thumb openers with 1/8" or 5/32" holes

ringed almost to the tip

Used primarily on steel

gold (which can be refined out of the water bath)

27/64" Counterbore (For GC121 Bearing) steak blade cutting or slicingQuality 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.