replaces the need for sets of metric and imperial spanners. smooth jaws for damage free installation of plated fittings - working directly on chrome!. Also excellent for gripping, holding, pressing and bending workpieces. Zero backlash jaw pressure prevents damage to edges of sensitive components. Push the button for adjustment on the workpiece. No unintentional shift of the gripping jaws and no slipping of the joint. Parallel jaws give a more solid grip; its design allows flexible adjustment of all widths up to the specified maximum size. The ratchet type principle allows quick and easy tightening and release of all bolted connections. Lever transmission greater than 10 : 1 for strong gripping power. ideal multi-purpose wrench in pocket size. indispensable companion in emergency tool kit.