A cosmetic blackener for most non-ferrous metals. ABC Blackener works on aluminum, brass and copper. No special ventilating system required. Should be used at room temperature. May be applied by immersion or brush-on technique. Precision Brand ABC Blackener Kit contains a 1 qt bottle of ABC Blackener and a 1 qt bottle of ABC Sealant. 1 qt of ABC Blackener covers 30 to 40 sq-ft, however coverage varies with application technique. ABC Blackener products cannot be shipped via air transportation.