The Knot Wheel Brush is suitable for use on hand-held angle grinders, for processing weld seams, and for removing scale, rust, paint, slag, and concrete residue. The brush with steel wire is suitable for processing large steel surfaces. The aggressiveness is hard. The brush is suitable for professional use. For the knot wheel brush, the knots twisted to the left increase durability. The high-grade “Made in Germany” quality is often used in the metalworking industry, in craft businesses, car workshops, and by pipeline, staircase, railing, and container builders.