... deburring, polishing, and removing scale, rust, corrosion, weld scale . cup brush,Heavy-duty cleaning of large metal surfaces.weld scale and ... .35 and 0.50mmRPM:12,500Steel wire type:brass-plated steel wire,phosphated steel wire,galvanized steel wire and steel cordBowl type:galvanized bowl ... balanceOther diameters:65,75,85,90,100 and 125mm bowl twisted steel wire brush