These cam levers have a technically optimised plastic thrust washer.
The thrust washer is made of a special high-performance plastic that guarantees very good wear and creep resistance.

Handle cast aluminum EN AC-46200.

Thrust washer high performance carbon-fibre reinforced thermoplastic.

Hinge pin steel, grade 5.8 or stainless steel 1.4305.

Stud steel, grade 5.8 or stainless steel 1.4305.

Lever powder-coated black fine structured or traffic red fine structured.
Thrust washer, black.
Hinge pin, stud steel, blue passivated or bright stainless steel.

Adjustable cam levers are used if the position of the lever relative to the axis of tension only permits one specific position (interference circle). The exact position of the lever is adjusted using a screwdriver on the fine thread setscrew.
Plastics are subject to creeping under load (retardation).

1) setscrew for fine adjustment of lever