Revolver Drill Brush - Power Scrubbing Drill Attachment - Multi-Purpose Cleaning Tool Heavy Duty Nylon Bristles Create The Best Power Brushing Action Galvanized Steel (7mm - 5/16") Chuck Style Shaft Fits MOST Power Drills Shaft Is Machined And Recessed Into Durable Plastic Base For No Spin Out Action The Sturdy 2 Long Nylon Bristles Expand To A 4.5 Diameter When In Use Spin & Brush Away Dirt And Grime On Tires, Rims, Carpet, Floor Mats, Upholstery, Boats, Trucks, Walls, Floors, Tile, And More!