Retaining Ring,External,0.05 in Thk,PK25, System of Measurement Inch, Location Style External, Thickness 0.05 in, Fits Shaft Diameter 1 3/8 in, For Bore Diameter Not Applicable, Fits Groove Diameter 1.291 in, Fits Groove Width 0.056 in, Fits Groove Depth 0.042 in, Free Inside Diameter 1.272 in, Clearance Diameter 1.8 in, Material Steel, Finish Zinc Plated, Material Grade/Class Ungraded, Tensile Strength 150,000 psi, Ring Type External Retaining Ring, Clearance Diameter Type Expanded