3" Roloc Bristle Discs, 10/bx, Coarse, Green. Disc is a molded, abrasive filled bristle disc instead of wire brushes for automotive use on aluminum and metal. Use for deburring, blending, finishing, polishing, cleaning and for coating, defect, scratch and rust removal. The ideal tool to replace scraper, wire wheels and chemical gasket strippers. Best used on harder metal such as steel. No wire to fly back at the operator. Max operating speed 18,000 RPM. Use with 3M Roloc Holder 05540.