G8492 Drill Bushing Bushing Type Headless Press Fit Inside Diameter 1-41/64 In Outside Dia 2-/14 In Inside Dia Tolerance .0003-+.0007 In Outside Dia Tolerance +0.0021-- +0.0025 In Concentricity Tolerance .0005 In T.I.R. Max Overall Length 1-3/4 In Material 52100 Thru Hardened Finish Steel Drill Size 1-41/64 In Hardness RC 62-64