Internal Light Duty Spiral Ring System of Measurement Inch Location Style Internal Thickness 0.025 in Fits Groove Diameter 1.544 in Fits Groove Width 0.031 in Fits Groove Depth 0.022 in Free Outside Diameter 1.559 in Material Stainless Steel Material Grade/Class 18-8 Ring Type Internal Light Duty Spiral Ring Clearance Diameter Type Free OD Thickness Tolerance +/-0.0015 in Standards REACH Compliant RoHS Compliant Groove Width Tolerance +/-0.002/0.000 In.