External Grip Ring System of Measurement Inch Location Style External Thickness 0.035 in Fits Shaft Diameter 3/16 in For Bore Diameter Not Applicable Fits Groove Diameter Not Applicable Fits Groove Width Not Applicable Fits Groove Depth Not Applicable Free Inside Diameter 0.181 in Free Outside Diameter Not Applicable Clearance Diameter Not Applicable Material Stainless Steel Finish Plain Material Grade/Class Not Graded Tensile Strength Not Applicable Ring Type External Grip Ring