... Good wet stiffness Excellent bend recover Nylon Filament for Toothbrush,Pa610/PA612 toothbrush Filaments 1.Product Description ... Group, Mainly produce filament include Filament for paint brush, filament for toothbrush,and abrasive filament,Main Material is ... brush filament, Eye defining brush filament, Kakuki brush filament, Makeup brush filament, Cosmetic brush filament, Shaving brush filament, ...