Retaining Ring,Internal,2.5 mm Thk,PK5, System of Measurement Metric, Location Style Internal, Thickness 2.5 mm, Fits Shaft Diameter Not Applicable, For Bore Diameter 68 mm, Fits Groove Diameter 71 mm, Fits Groove Width 2.65 mm, Free Outside Diameter 72.5 mm, Clearance Diameter 51.6 mm, Material Steel, Finish Plain, Material Grade/Class Ungraded, Ring Type Housing Ring, Clearance Diameter Type Compressed, Material Quality Standards DIN 472, Pack Size Small Pack