Retaining Ring Internal 0.8 mm Thk PK100 System of Measurement Metric Location Style Internal Thickness 0.8 mm Fits Shaft Diameter Not Applicable For Bore Diameter 9 mm Fits Groove Diameter 9.4 mm Fits Groove Width 0.9 mm Free Outside Diameter 9.8 mm Clearance Diameter 3.7 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