Steel: 6140CrV 44-48 HRC Nickel plating A: 18 mm B: 20 mm Length: 225 mm The double-sided hinge wrench is a non-disassembling option of a drive and extender with a hinged twelve-sided end head (with a 180° tilt angle). It is designed for efficient use and transmission of significant force when working in hard-to-reach areas. Rotating the end head parallel to the body of the wrench allows for quick loosening and tightening of fasteners when applying a large amount of force is not required. You can also purchase a set of hinged wrenches.