3M 09020 Marine Aluminum Restorer & Polish Removes oxidation growth and stains and restores a lustrous appearance to bare aluminum Great for pontoons and aluminum boats Use sparingly, a little bit goes a long way Restores the beauty and luster to aluminum Removes heavy oxidation and chalking Turns back the clock on the effects of weathering on aluminum Concentrated formula provides a lot of cleaning with a small amount May be applied by hand or machine