E-12ST PA-A E Style Retaining Ring,0.015 In. Thk,PK50, System of Measurement Inch, Location Style External, Thickness 0.015 in, Fits Shaft Diameter 1/8 in, For Bore Diameter Not Applicable, Fits Groove Diameter 0.095 in, Fits Groove Width 0.02 in, Fits Groove Depth 0.015 in, Free Inside Diameter 0.094 in, Free Outside Diameter 0.23 in, Clearance Diameter 0.23 in, Material Steel, Finish Black Phosphate, Material Grade/Class Ungraded, Tensile Strength 100,000 psi, Ring Type E-Style Ring