Dico 50-3 Wheel Nyalox Wheel Kit 3-inch Assorted Nyalox Wheel Brushes, 3-Piece Aluminum oxide infused nylon flap brush lasts up to 10 times longer than a wire brush Works on wood metals plastics fiberglass tile stone & cement Designed to last up to 10 times longer than comparable wire brushes Kit includes 1 each of the 3-inch nyalox wheels The shape makes them ideal for getting into crevices & contours