Steel: 6140CrV 44-48 HRC Nickel plating A: 22 mm B: 35.5 mm Length: 235 mm The hinged combination wrench is a non-detachable version of a drive and extension with a hinged twelve-point socket head (180° tilt angle). It combines the capabilities of a socket head and an open-ended profile. It is designed for efficient use and transmission of significant force when working in hard-to-reach places. The rotation of the socket head parallel to the body of the wrench allows for quickly loosening and tightening fasteners when applying less force is needed. The open-ended profile allows for working 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.