Steel: 6140CrV 44-48 HRC Nickel-plating A: 32 mm; B: 36 mm; C1: 12 mm; C2: 13 mm; Length: 210 mm A spanner is necessary when servicing hydraulic and pneumatic systems. It is a hexagonal detachable profile with a slot for fitting the spanner onto the pipeline. The profile of the spanner is more massive and taller than a socket wrench, which increases the contact area and reduces the risk of fastening deformation. The working profile of the spanner is offset by 15º from the longitudinal axis, providing wider possibilities for work in limited spaces. The spanners are made of chrome-vanadium steel. The nickel-plating with a protective lacquer layer ensures additional corrosion resistance.