Inverted Internal Ring System of Measurement Inch Location Style Internal Thickness 0.062 in Fits Groove Diameter 1.989 in Fits Groove Width 0.068 in Fits Groove Depth 0.057 in Free Outside Diameter 2.025 in Material Steel Finish Black Phosphate Material Grade/Class Not Graded Ring Type Internal Inverted Ring Clearance Diameter Type Free OD Thickness Tolerance +/-0.003 in Standards REACH Compliant RoHS Compliant Groove Width Tolerance +/-0.004/0.000 In.