Materials: Lever: Zinc die cast, with wear-resistant epoxy resin coating, black matt. Support washer: Zinc-plated steel, chromated. With knurled adjustable support washer with fine thread. Thus the clamping force and the lever position can be set exactly on the lever side. For rapid clamping and loosening by hand. Clamping is made without generating a torque. Clamping force is up to 8 kN.