Bar Keepers Friend, cleanser and polish. Non abrasive powder. Removes rust and hard water stains. Works great for Copper, Tile, Brass, Stainless Steel, Marble, Porcelain, Plastics and Glass Cooktops. 12 Ounce size. Size/Dimensions: 12 Ounce Type: Specialty Tools and Gadgets Color: Multi-Color Power: Hand Tool