Dialux Black Polishing Compound The professional choice for making non-precious metals look better than new Apply small amount by holding against spinning buffing wheel or rub on cloth; contains alpha-alumina Use on aluminum, brass, copper, iron, pewter, nickel, steel and stainless steel Large 6 oz 5" x 1" block is easier to use with powered buffers, lasts for dozens of polishing jobs Available in several colors/compositions for wide variety of materials and results; made in USA