Brass-plated steel brush - Diameter: 50 mm. -1/4" spike. -Brass-plated steel hairs of "0.3mm -To be used with drills. -Ideal for removing impurities or residue, polishing metal surfaces. -Suitable for cleaning and polishing work. -Article known as polishing brush, polishing brush, metal cleaning brush, metal polishing brush, metal polishing brush, metal cleaning disc, metal polishing disc.