G8544 Drill Bushing Bushing Type Headless Press Fit Thin Wall P Inside Dia 55/64 In Outside Dia 1-1/4 In Inside Dia Tolerance .0002-+.0006 In Outside Dia Tolerance +0.0017 - +0.002 In Concentricity Tolerance .0005 In T.I.R. Max Overall Length 1 In Material 52100 Thru Hardened Finish Steel Drill Size 55/64 In Hardness RC 62-64