Retaining Ring Internal 2 mm Thk PK25 System of Measurement Metric Location Style Internal Thickness 2 mm Fits Shaft Diameter Not Applicable For Bore Diameter 50 mm Fits Groove Diameter 53 mm Fits Groove Width 2.15 mm Free Outside Diameter 54.2 mm Clearance Diameter 36.3 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