Tenaci 184mm 6-puck 2.6mm Copper Clutch Disc (Copper) Ford 23 splines

A 2.6mm thick copper lamella.
Withstands higher stress and maintains better quality than traditional cheaper no-name copper lamellae.
Serves as a replacement for e.g. Tilton, which also uses 2.6mm lamellae in its pressure plates.

“Copper lamella” = sinter = metallic

Ford 23 splines