External Heavy Duty Spiral Ring System of Measurement Inch Location Style External Thickness 0.078 in Fits Shaft Diameter 2 1/2 in For Bore Diameter Not Applicable Fits Groove Diameter 2.36 in Fits Groove Width 0.086 in Fits Groove Depth 0.07 in Free Inside Diameter 2.343 in Free Outside Diameter Not Applicable Clearance Diameter Not Applicable Material Steel Finish Plain Material Grade/Class Not Graded Tensile Strength Not Applicable Ring Type External Heavy Duty Spiral Ring