Spiral Retaining Ring,0.078 In. Thk,PK5, System of Measurement Inch, Location Style Internal, Thickness 0.078 in, Fits Shaft Diameter Not Applicable, For Bore Diameter 2 1/8 in, Fits Groove Diameter 2.251 in, Fits Groove Width 0.086 in, Fits Groove Depth 0.063 in, Free Outside Diameter 2.267 in, Material Steel, Finish Plain, Material Grade/Class Ungraded, Tensile Strength 211,000 psi, Ring Type Spiral Retaining Ring, Material Quality MLK s ANSI, Pack Size Small Pack.