Retaining Ring External 2 mm Thk PK25 System of Measurement Metric Location Style External Thickness 2 mm Fits Shaft Diameter 50 mm For Bore Diameter Not Applicable Fits Groove Diameter 47 mm Fits Groove Width 2.15 mm Free Inside Diameter 45.8 mm Clearance Diameter 64.5 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