1 IN DRIVE RETAINING RING 2-1/4 GROOVE DIAMETER

Retaining rings are used to help secure sockets onto drive tools; They are not intended to bear any load; The rotational forces are between the drive tool and the socket; The resin crush gauge on the pin helps indicate when a socket is excessively worn and should be replaced; Drive tool and socket should line up when in use and should not pinch the crush gauge