Retaining Ring Internal 0.078 in Thk PK10 System of Measurement Not Applicable Location Style Internal Thickness 0.078 in Fits Shaft Diameter Not Applicable For Bore Diameter 2 1/16 in Fits Groove Diameter 2.186 in Fits Groove Width 0.086 in Fits Groove Depth Not Applicable Free Inside Diameter Not Applicable Free Outside Diameter 2.28 in Clearance Diameter 2.0625 in Material Steel Finish Plain Material Grade/Class Ungraded Tensile Strength Not Applicable