Polishing Brushes with Abrasive Nylon and Silicon Carbide1.Grit:24#~1500#2.Filament:35MM3.Good aged ... #, 80#, 120#, 180#, 240#, 320#, 500#,800#, 1000#, 1200#, 1500# and steel filament.FilamentDupont Tynex 6.12 from USA, Hahl from Germany ... and Chinese local material etc.ApplicationAutomatic grinding machine, Hand grinding machine, ...