Retaining Ring,Internal,1.2 mm Thk,PK50, System of Measurement Metric, Location Style Internal, Thickness 1.2 mm, Fits Shaft Diameter Not Applicable, For Bore Diameter 28 mm, Fits Groove Diameter 29.4 mm, Fits Groove Width 1.3 mm, Free Outside Diameter 30.1 mm, Clearance Diameter 17.9 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