... stiffness Excellent bend recover Nylon Filament for Toothbrush,Pa610/PA612 toothbrush Filaments 1.Product Description:-Solid round ... filament include Filament for paint brush, filament for toothbrush,and abrasive filament,Main Material is PET,PBT, ... Cosmetic brush filament, Shaving brush filament, Nailbrush filament,- Toothbrush filament,- Paintbrush filament,- Carwash brush filament,- Strip brush ...