We are offering 2 recommendations for this application 1. A tough premium 80 grit zirconia abrasive belt with a very strong polyester backing. HZ72 offers a fast controlled cut on non-ferrous metals 2. A P120 grit flexible aluminium oxide abrasive with top coating to reduce belt clogging and increase abrasive life. JF4top material uses a white aluminium oxide to ensure great belt life.