The Monument GRIP+ Adjustable Basin Wrenches are ideal for use in tightening or loosening nuts in awkward positions, particularly those underneath basins or baths.The teeth on the jaws will grip uneven shapes etc. The swivelling head allows access where fixed spanners will not operate and the solid steel handle has profiled end to allow attachment of socket and extension for longer reach. Correct heat treatment of all components ensures a long life. Made in Britain.