G2862 Drill Bushing Bushing Type Head Press Fit Inside Diameter 3/8 In Outside Dia 5/8 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 5/8 In Material 52100 Thru Hardened Finish STEEL Drill Size 3/8 In Hardness RC 62-64