BHA 4" Nylon Wire Strip Flap Brush with 1/4" Hex Shank for Drill or Die Grinder

They excel at removing rust, stripping paint, removing glue, sealant, mill scale, oxidation, excess grout, finishing Shou Sugi Ban, etc. Nylon wire bristles like those present on this product will conform to the work piece as opposed to getting snagged on protrusions so they are ideal for uneven surfaces.