Prang Metallic Art Markers feature superior ink formulation that lends metallic luster to a variety of bold colors. Superb effects are achieved on dark paper, glass, wood and metal. Durable bullet tip delivers both fine and broad lines. Markers are safe for use on archival projects. Ink is washable, odorless, acid-free and won't bleed through paper. Colors include two colors: gold and silver. Certified AP nontoxic markers conform to ASTM standards.