Metric External Push-On Ring System of Measurement Metric Location Style External Thickness 0.5 mm Fits Shaft Diameter 20 mm For Bore Diameter Not Applicable Fits Groove Diameter 19.75 mm Fits Groove Width 1 mm Fits Groove Depth Not Applicable Free Inside Diameter 19.5 mm Free Outside Diameter 29 mm Clearance Diameter Not Applicable Material Steel Material Grade/Class Not Graded Tensile Strength Not Applicable Ring Type Self-Locking External Push-On Ring