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 steel 1.0401.

Thrust washer high performance, carbon-fibre reinforced thermoplastic.

Hinge pin stainless steel 1.4305.

Stud steel, grade 5.8.

Handle and stud blue passivated.
Thrust washer, black.
Hinge pin bright.

Plastics are subject to creeping under load (retardation).