This Priory Double-Ended Scaffold Spanner is suitable for use with all popular scaffold fittings used within the U.K. It is manufactured to surpass the performance test BS25581954 with a swing over handle and a zinc plate finish. The sockets locate directly onto the handle relieving the rivet of stress. The sockets are hardened and stress relieved to ensure they retain their shape. Specifications Socket Size 7/16 and 1/2in. Length 230mm.