The Adjustable Spanner Wrench is deeply grooved to facilitate adjustment. Since the jaws of an Adjustable Spanner 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 in a tool kit. Slim jaws are shaped to give the best possible entry into confined spaces. Mini Size Metal Spanner is the most convenient tool to use and carry. Metal 4 inch 100mm Wrench, Weight: 1.2897042327 pounds, Manufacturer: Reeatel