Pricing mentioned is for EA. Requires a minimum buy of 1 piece. 1" Drive Retaining Ring Cushion Grip 2" Groove;Ret Ring 2.13" Hub 1.973" Groove 1-Piece Retaining Ring; Hazmat=False; Features=Helps secure sockets onto drive tools;One-piece construction, no loose parts;Resin crush gauge on the pin helps indicate when a socket is excessively worn and should be replaced; StandardPack=1EA; CountryOfOrigin=US; Drive Size=1 in; Type=O-Ring;