Brass plated steel brush disc. -Diameter: 100 mm. -Thickness: 6mm. -1/4" spike. -With "0" brassed steel wire.3mm -Brass-plated steel spikes. -Use in normal drills, maximum 4500 R.Q.M. -Ideal for polishing oxidized surfaces in general, polishing welding slag, removing varnishes, removing small scales in general. -Article known as paint cleaning brush, rust cleaning brush, metal polishing brush, paint lighting brush, rust removal brush.