Steel: 6140CrV 44-48 HRC Nickel plating A: 13 mm B: 15 mm Length: 195 mm The hinged double-sided wrench is a non-dismantlable variant of the drive and extension with a hinged twelve-sided head (inclination angle 180°). It is designed for efficient use and transmission of significant force when working in hard-to-reach areas. The rotation of the head parallel to the body of the wrench allows for quick turning and fastening of fasteners when large force is not required. You can also purchase a set of hinged wrenches.