Steel: 6140CrV 44-48 HRC Nickel-plating A: 21 mm; B: 23 mm; C1: 8 mm; C2: 8 mm; Length: 150 mm A spanner wrench is necessary for servicing hydraulic and pneumatic systems. It is a 6-sided adjustable profile with a slot for fitting the wrench onto a pipeline. The profile of the spanner wrench is sturdier and taller compared to a socket wrench, which increases the contact area and reduces the risk of fastener deformation. The working profile of the spanner wrench is offset by 15º from the longitudinal axis, providing wider possibilities when working in restricted spaces. The wrenches are made of chromium-vanadium steel. Nickel-plating with a protective lacquer layer ensures additional corrosion resistance.