Retaining Ring External 2.5 mm Thk PK5 System of Measurement Metric Location Style External Thickness 2.5 mm Fits Shaft Diameter 70 mm For Bore Diameter Not Applicable Fits Groove Diameter 67 mm Fits Groove Width 2.65 mm Free Inside Diameter 65.5 mm Clearance Diameter 87 mm Material Steel Finish Plain Material Grade/Class Ungraded Ring Type External Retaining Ring Clearance Diameter Type Expanded Material Quality Standards DIN 471 Pack Size Small Pack