Blackhawk™ by Proto® Carbon Cleaning End Brush ITEM #:ZT-1301 Features and benefits Features and benefits Removes hard carbon deposits as well as rust and paint from metal surfaces.Use with 1/4" drill for general metal cleaning.Safety glasses and protective clothing are recommended while using this brush.Diameter face: 0.75"Diameter shank: 0.25"Max. safe free speed: 20,000 RPM Add to Wish list Add to Set Buy Now Print Warranty Share