Designed for cleaning, derusting, smoothing, cleaning of weld seams, light deburring, and removal of corrosion and paint. Brass wire filament brushes are designed for applications like surface finishing on copper or brass workpieces. Compared to steel wire, brass wire is softer and more flexible. For all brushes with brass wire, PFERD uses wire quality CuZn37. Brass wire is temperature-resistant up to 350°F.