Dico 50-2.5 Cup Nyalox Cup Kit 2.5-inch Assorted Nyalox Cup Brushes, 3-Piece Great for removing paint rust corrosion & burns from large flat surfaces They are constructed so that the bristles don't fly away This kit includes 1 blue fine 240 grit 1 orange medium 120 grit 1 grey coarse 80 grit These nyalox brushes last up to 10 times longer than wire brushes