Manufactured to surpass the performance test BS2558: 1954. The sockets locate directly onto the handle relieving stress on the rivet. All sockets are plated, hardened and stress relieved to ensure they retain their shape. Spinner Head Spanner The handle is produced from a one piece drop forging with a 7/16” and 1/2” Whitworth double ended socket for use on fixings. Features a taper podger end used to line up holes and manipulate fixings. Rotating socket offers a single tool for two fastener sizes. Overall length: 245mm. Socket size: 7/16”W x 1/2”W.