Internal Light Duty Spiral Ring System of Measurement Inch Location Style Internal Thickness 0.021 in Fits Shaft Diameter Not Applicable For Bore Diameter 7/8 in Fits Groove Diameter 0.917 in Fits Groove Width 0.026 in Fits Groove Depth 0.021 in Free Inside Diameter Not Applicable Free Outside Diameter 0.926 in Clearance Diameter Not Applicable Material Stainless Steel Material Grade/Class 18-8 Tensile Strength Not Applicable Ring Type Internal Light Duty Spiral Ring