Steel: 6140CrV 44-48 HRC Nickel-plating A: 16 mm; B: 17 mm; C1: 5 mm; C2: 7 mm; Length: 140 mm Combined wrench made of chrome-vanadium steel with a reliable 72-tooth ratchet mechanism in the adjustable part. The ratcheting feature speeds up fastening and loosening of fasteners in both regular conditions and limited space conditions. It provides high torque and a minimal return angle of 5º. The ratcheting part of the wrench is not intended for stripping or forcefully extending fasteners, for which a socket wrench or open-end wrenches are used. You can also buy a set of combined ratchet wrenches.