Internal Medium Duty Spiral Ring System of Measurement Inch Location Style Internal Thickness 0.049 in Fits Groove Diameter 2.582 in Fits Groove Width 0.056 in Fits Groove Depth 0.041 in Free Outside Diameter 2.606 in Material Steel Finish Plain Material Grade/Class Not Graded Ring Type Internal Med Duty Spiral Ring Clearance Diameter Type Free OD Thickness Tolerance +/-0.003 in Standards REACH Compliant RoHS Compliant Groove Width Tolerance +/-0.004/0.000 In.