... 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 ... , Nylon 610 filament, Nylon 612 filament,- PBT filament : Polybutylene Terephthalate filament,- PE filament : HDPE filament, LDPE filament, LLDPE ...