• Complete set of 12 steel brushes for various surface treatment jobs. • Includes 50 mm, 75 mm, and 100 mm circular brushes, as well as cup, needle, and tube brushes. • Made of 0.5 mm crimped steel wire for effective rust and paint removal. • 6 mm (1/4") hexagonal shank compatible with standard chucks and bit holders. • Maximum speed of 4,500 rpm for optimal performance in cleaning and sanding. • Suitable for working on metal, wood, and removing impurities in hard-to-reach areas. • Robust design ideal for preparing surfaces before welding or cleaning joints and pipes.