The Knot Cup Brush is mounted in hand grinders or flexible shafts. It is used for polishing, removing rust, paint, and dirt, and light deburring work. The steel filling is suitable for processing steel surfaces. With its fixed 6 mm shaft, the brush is suitable for professional use. Characteristic of this all-round tool is the dense wire filling and its balanced run. The high-grade “Made in Germany” quality is often used in the metalworking industry and in craft businesses, car workshops, and by staircase, railing, and container builders.