Retaining Ring, System of Measurement Metric, Location Style External, Thickness 1 mm, Fits Shaft Diameter 9 mm, For Bore Diameter Not Applicable, Fits Groove Diameter 8 mm, Fits Groove Width 1.1 mm, Fits Groove Depth 0.5 mm, Free Inside Diameter 7.8 mm, Free Outside Diameter 11.2 mm, Clearance Diameter 11.4 mm, Material Steel, Finish Black Phosphate, Material Grade/Class Not Graded, Tensile Strength Not Applicable, Ring Type Crescent Retaining Ring, Thickness Tolerance +0.000/-0.060 mm