Steel: 6140CrV 44-48 HRC Nickel plating Protective lacquer A: 23 mm; B: 27 mm; C: 5 mm; Length: 130 mm A wrench with a classic box-end profile. The box-end wrench is widely used for various tasks. This is explained by the unique property of its open jaw: the ability to work when access to fastening is possible only from one side. During operation, the box-end profile leaves the fastening element open for viewing. The angle of inclination of the box-end part relative to the longitudinal axis of the wrench is 15°, which allows for a minimum angular step of up to 30° when working in hard-to-reach places. You can also buy a set of box-end wrenches.