Material: Handles 1.4308. Thrust washer plastic PA 66 GF 35-X fibreglass reinforced. Hinge pin, washer and screw 1.4305. Version: Handle electropolished. Thrust washer black. Hinge pin, washer and screw bright. Note: 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). Drawing reference: 1) setscrew for fine adjustment of lever.