These Lessmann X-Lock non-sparking brushes are suitable for use on hand-held angle grinders with the X-Lock fitting, they can be used for polishing, light deburring work, and removing rust, paint, dirt, and scale. The brush with steel wire is used for flexible work on large steel surfaces. 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. Features of the wire brushes are their dense filling and precise concentricity. Ref: UTTK2544