Retaining Ring,External,0.017 In. Thk,PK10, System of Measurement Inch, Location Style External, Thickness 0.017 in, Fits Shaft Diameter 1/2 in, For Bore Diameter 1/2 in, Fits Groove Diameter Not Applicable, Fits Groove Width Not Applicable, Fits Groove Depth 0.525 in, Free Inside Diameter 0.5 in, Free Outside Diameter 1.3 in, Clearance Diameter Not Applicable, Material Steel, Finish Zinc Plated, Material Grade/Class SAE 1050, Tensile Strength Not Applicable, Ring Type Two-Piece Decorative Cap