Precision Brand® Blackeners Are Used Finishes To Cover Aluminum, Brass And Copper.
Precision Brand® Blackeners impart a tough, dull black protective finish to ferrous metal parts for long lasting durability. No special ventilating system required. Should be used at room temperature. May be applied by immersion or brush-on technique. One quart bottle covers 30 to 40 square feet, however coverage varies with application technique. Available in a variety of types and special kits. Quantities vary.