C-Style Ring System of Measurement Inch Location Style External Thickness 0.05 in Fits Shaft Diameter 1 3/8 in For Bore Diameter Not Applicable Fits Groove Diameter 1.237 in Fits Groove Width 0.056 in Fits Groove Depth 0.069 in Free Inside Diameter 1.22 in Free Outside Diameter 1.555 in Clearance Diameter 1.58 in Material Steel Material Grade/Class Not Graded Tensile Strength Not Applicable Ring Type C-Style External Ring Thickness Tolerance +/-0.002 in