Steel: 6140CrV 44-48 HRC Nickel plating A: 25.5 mm B: 41 mm Length: 250 mm The hinged combination wrench is a non-disassembling version of a drive and extension with a hinged twelve-point socket head (180° angle of inclination). It combines the capabilities of a socket head and a box profile. It is designed for efficient use and transmission of significant force when working in hard-to-reach places. Rotating the socket head parallel to the body of the wrench allows for quick loosening and tightening of fasteners when no significant force is required. The box profile allows for working with fasteners in cases where access to the fastener is only possible from one side. You can also buy sets of hinged combination wrenches: 516 061 and 516 091.