Holemaker 5Pc Carbide Burr Set 3 8 & 1 2In Hdx6mm Dc TECH3PH 0303 Ultimate Optical Clarity (1 1 1 1): Experience XA BLA Ultimate Optical Clarity (1 1 1 1): Experience the clearest Tool has an all steel construction & is designed to betapped with a hammer to force a light viscosity oil throughthe tool into the coupler & finally into the grease jointbreaking up and removing dirt and debris CB6M SET 05 Holemaker 5pc Carbide Burr Set 3 8 & 1 2in 6mm Shank DC CARBIDE BURRS 6MM SHANK DOUBLE CUT Set Contents Listed Below Part No Description Cut Style CB SB3 3 8in Round End Cut DC CB SC3 3 8in Round Radius End DC CB SC5 1 2in Round Radius End DC CB SF3 3 8in Tree Shape Radius End DC CB SF5 1 2in Tree Shape Radius End DC