Foundation:
5-, 7-ply (1 linen) with 3 mm or
4 mm oil-resistant synthetic rubber-felt or 5-, 7 -pIy (1 linen) with vulcanized caoutchouc face
Card wire:
round, biconvex, bright, tinned, V2A-stainless.
All fillets are equipped with polished side- and surface grinding and extra
hardened points.