G8724 Drill Bushing Bushing Type Slip Fixed Renewable Combination Thin Wall SF Inside Dia 0.358 In Outside Dia 5/8 In Inside Dia Tolerance .0001-+.0005 In Outside Dia Tolerance -0.0002 In Concentricity Tolerance .0005 In T.I.R. Max Overall Length 1/2 In Material 52100 Thru Hardened Finish Steel Drill Size T Hardness RC 62-64