Metric C-Style Ring System of Measurement Metric Location Style External Thickness 1 mm Fits Shaft Diameter 10 mm Fits Groove Diameter 9 mm Fits Groove Width 1.1 mm Fits Groove Depth 0.5 mm Free Inside Diameter 8.75 mm Free Outside Diameter 12.2 mm Material Steel Material Grade/Class Not Graded Ring Type C-Style External Ring Thickness Tolerance +0.000/-0.060 mm Standards REACH Compliant RoHS Compliant Groove Diameter Tolerance -0.09mm Package Quantity 50