FLEXCUT Mill Scale puts an end to problems removing mill scale. These flexible wheels are designed to last longer and remove mill scale quickly. No more glazing or clogging, just hassle-free removal of mill scale, leaving a clean and even surface. Also extremely effective on heavily rusted plates, aluminum or galvanized metal and painted material. Wheels are free of iron, sulphur and chlorine (Fe-S-Cl) and are guaranteed not to contaminate aluminum. A 5/811 threaded arbor for Spin-On mounting reduces downtime for wheel changes and helps you finish your toughest grinding jobs faster. Always use with flange WAL30B057. For use with aluminum, mill scale, rusted steel, stainless steel and non-ferrous metals. Package of 25.