Metric C-Style Ring System of Measurement Metric Location Style External Thickness 1.2 mm Fits Shaft Diameter 19 mm Fits Groove Diameter 17.2 mm Fits Groove Width 1.3 mm Fits Groove Depth 0.9 mm Free Inside Diameter 16.7 mm Free Outside Diameter 21.5 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 -0.11mm Package Quantity 10