Offering wire wheel brushes: Our mandrel-mounted wire and hair brushes are of the most durable in the industry. Brush filaments are securely embedded in a steel ring construction offering the highest quality through consistent distribution. These mounted wire wheels and wire cups are available in Brass, Steel or Nylon, with 3. 0mm, 6. 0mm shanks. They are used for general deburring and clear-up to remove rust and corrosion.