General description These twist brushes are designed for effective rust removal, corrosion, paint stripping, deburring, and surface treatment. They are ideal for cleaning castings, structural steel, and sheet metal. Technical specifications Set includes: 1 knotted wire brush, 1 knotted steel wire brush, 1 knotted end brush Handle diameter: 1/4" Maximum RPM: 4500 Material: Fine carbon steel wire Compatibility and accessories Compatible with any 1/4" diameter electric drill or pneumatic drill Other information Sturdy structure: Hand-wound and crimped steel wire is evenly distributed for durability and efficiency 3 different shape and size combinations to meet various needs