Hitachi 729230 4-Inch Crimped Carbon Steel Wire Cup Brush with Guard (Discontinued by the Manufacturer) Made for light duty removal and a finer finish on the work surface Rust resistant premium brass coated steel wire Protective guard shields users from debris Multi-thread arbor allows brush to fit both 5/8-inch-11 and M14 by 2.0-arbors Comes with a 30-day limited warranty Made of high carbon tempered steel Removes paint, rust and corrosion Protective guard for longer life Twists on tighter than other brush attachments Comes with a 30-day limited warranty