Conforms to the grate surface to clean faster and more effectivelySafe for all grate surfacesReduces landfill waste with every use.Easily clean tough, baked-on messes! EG Grill Cleaning Stone it's safe for all types of grill grates, including porcelain enamel, cast iron, stainless steel, steel, and chrome. EG Grill Cleaning Stone with its ergonomically designed handle, works faster and better than traditional wire brushes, and it's safe to use on hot or cold grates.