The Monument 4537G GRIP+ Shorty Handle fits Monument GRIP+ Sockets and Tools for back nut box spanners radiator valves taps pumps and cabinets allowing improved access It is the innovative advancement to the best selling Professional Adjustable Basin Wrench MON345 The unique shape of the swivelling head has additional sockets and tools to fit many radiator valves back nut box spanners taps pumps and cabinets Originally conceived by Arthur Collier in 1958 and stillMade in Britain