Materials: Lever: Zinc die cast,
with wear-resistant epoxy resin coating, black matt.
Grub screw: Zinc-plated steel, chromated.
Support washer: Thermoplast, glass-fibre reinforced, black matt.

Non-adjustable support washer.
The clamping force, can either be set on the lever side by turning the lever,
or on the backside by adjusting the nut/knurled nut if present.
For rapid clamping and loosening by hand. Clamping is made without
generating a torque. Clamping force is up to 8 kN.