Tenaci 184 mm 6-puck 2.6 mm copper clutch disc Audi 23 splines 24 mm axle

A 2.6 mm thick copper friction plate.
Withstands higher stress and maintains better quality than traditional cheaper no-name copper plates.
Serves as a replacement for systems such as Tilton, which also use 2.6 mm thick plates in their pressure plates.

“Copper plate” = sintered = metallic

Audi 23 splines 24 mm shaft