• 9-piece nylon filament abrasive brush set for drill • Includes 3 different sizes: 75 mm cup and flat brushes, and 25 mm end brush • Features three grit levels identified by colors: gray (80#), red (100#), and blue (240#) • 1/4" (6.35 mm) hex shank compatible with drills, cordless screwdrivers, and drill presses • Ideal for removing rust, paint, corrosion, and scale gently and effectively • Suitable for multiple materials such as metal, stainless steel, wood, aluminum, plastic, PVC, and tiles • Chemical-resistant nylon bristles that do not spark or corrode • Durable filaments that retain their shape and allow for surface deburring in dry or wet conditions