G8472 Drill Bushing Bushing Type Headless Press Fit P Inside Dia 43/64 In Outside Dia 1 In Inside Dia Tolerance .0001-+.0005 In Outside Dia Tolerance +0.0015 - +0.0018 In Concentricity Tolerance .0005 In T.I.R. Max Overall Length 2 1/8 In Material 52100 Thru Hardened Finish Steel Drill Size 43/64 In Hardness RC 62-64