Mill-Rose copper center wheel brushes are very popular, low-cost, small-diameter brushes for light-duty, high-speed cleaning and polishing operations. Copper center wheel brushes feature a high-density bristle fill to produce maximum surface contact and brushing efficiency per thousand rpm (rounds per minute) with either portable or fixed power tools. Available in standard diameters up to 4 inches with arbor holes ranging from ¼” to 5/8”. Mill-Rose copper center brushes are available in high carbon steel, stainless steel, nylon, silicon carbide, aluminum oxide, and brass.