Steel: 6140CrV 44-48 HRC Nickel plating A: 13 mm B: 18 mm Length: 160 mm The hinged combination wrench is a non-detachable option for a drive and extension with a hinged twelve-point socket head (180° angle). It combines the capabilities of a socket head and a box-profile wrench. 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 great force is required. The box-profile allows for work with fasteners in cases where access to the fastener is only possible from one side. You can also purchase sets of hinged combination wrenches 516 061 and 516 091.