Designed for cleaning, derusting and smoothing, as well as removal of corrosion and paint. Ideal for brushing on large, flat and easily accessible surfaces due to face-down use with the entire brush face applied to the workpiece. Steel wire is the most common filament material. Brushes with steel wire as the filament material are ideal for work on surfaces and deburring. PFERD special wire has high tensile strength and bending fatigue strength. This ensures that the wire wears down in the optimal way, as well as a long tool life, even in extreme brushing applications. Steel wire is temperature-resistant up to 600°F.