The Metal Oil should be applied with a soft cloth, brush, or spray. It will dry hard in 3-12 hours. Clear Guard or Metal Wax may be applied over the oil. Metal Oil is available in clear, black, blue, brown, green, red, and yellow colors and 8oz., 32oz., 1 gallon, and 5 gallon sizes. One gallon of Metal Oil generally covers 300 sq. ft. per coat.