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 BS2558:1954 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. Priory A01 B0001