MobileSharp6-Inch Adjustable Wrench With Measurement Scale (Black and Silver) The jaws of an Adjustable wrench will adjust to suit various sizes of bolt and nut head, they are particularly useful when only a limited number of tools can be carried or kept in a tool kit. Slim jaws are shaped to give the best possible entry into confined spaces . Adjustable Wrench with slim and rounded anti-slip handle for comfort in use. The Adjustable wrench is deeply grooved to facilitate adjustment. It has a thin and smooth shank, with thin jaws to give good access.