UNION Abrasive Nylon brushes filament is a heat-stabilized, Abrasive Nylon filament containing small, sharp particles of silicone carbide or aluminium oxide, which are distributed throughtout the filament. Advantage *demonstrates up to 10 times the effective life of a ll not puncture skin or surface *does not shed bristles *will not oxidize and maintains its shape Abrasive Nylon brushes are the cutting edge in brushing technology. They are best suited for precision part finishing applications such as deburring and edge radiusing. Pro Brushes For Professional Choice All Professional Brushes Are Available For CUSTOM-MADE Grit choices are available in Silicon Carbide & Aluminum Oxide from 46 through 1500