Comprehensive Cleaning Kit: This set includes 3 pcs 0.79-inch pen brushes, 3 pcs 2-inch wheel brushes, and 3 pcs 2-inch cup brushes, designed to tackle a variety of surfaces from large areas to tight corners, ensuring thorough cleaning and grinding. High Compatibility and Performance: Suitable for most electric drills and pneumatic tools, these brushes can operate at speeds up to 4500 RPM, making them ideal for removing rust, stripping paint, and smoothing out weld spatter and oxidation. Stable and Secure Operation: Equipped with a 1/4-inch hex shank, these brushes maintain a firm grip in your drill, preventing slippage and ensuring consistent, reliable performance during all cleaning tasks. Built to Last: Constructed from premium carbon steel wire, each brush in this set is tightly bound to prevent bristle and bending, ensuring durability and for sustained heavy-duty use. Efficient Cleaning Power: Quickly and effectively remove rust, paint, and other residues from metal and wood surfaces. Ideal for preparing welding edges and restoring old surfaces, these brushes simplify your maintenance tasks., Weight: 1.15963149812 pounds, Manufacturer: Omvial