G2861 Drill Bushing Bushing Type Head Press Fit Inside Diameter 19/64 In Outside Dia 9/16 In Inside Dia Tolerance +.0001- +.0005 In Outside Dia Tolerance +0.0017 - +0.0014 In Concentricity Tolerance .0003 In T.I.R. Max Overall Length 1 In Material 52100 Thru Hardened Finish STEEL Drill Size 19/64 In Hardness RC 62-64