Steel: 6140CrV 44-48 HRC Nickel-plating A: 26 mm; B: 27 mm; C1: 9 mm; C2: 10 mm; Length: 175 mm A spanner is necessary for servicing hydraulic and pneumatic systems. It is a 6-sided profile with a notch for fitting the spanner onto the pipeline. The profile of the spanner is more robust and taller compared to a wrench, which increases the contact area and reduces the risk of fasteners deformation. The working profile of the spanner is offset by 15º from the longitudinal axis, providing wider possibilities when working in confined spaces. The spanners are made of chromium-vanadium steel. Nickel-plating with a protective lacquer layer provides additional corrosion resistance.