G8552 Drill Bushing Bushing Type Headless Press Fit Thin Wall P Inside Dia 31/32 In Outside Dia 1-3/8 In Inside Dia Tolerance .0002-+.0006 In Outside Dia Tolerance +0.0018 - +0.0022 In Concentricity Tolerance .0005 In T.I.R. Max Overall Length 2 In Material 52100 Thru Hardened Finish Steel Drill Size 31/32 In Hardness RC 62-64