Set #4 of Metallic Rub-Ons for Scrapbooking, Stamping and other crafts is an exciting accent produced by Craf-T Products (makers of Decorative Chalks) and is designed to be rubbed on paper, wood, metal or clay surfaces with ones finger for a metallic finish. In this set, there are MIDNIGHT SPARKLE, SUNBURST, SILVER GRAY, WHITE SPARKLE, APPLE GREEN, AMBER, & RUSSET. They are Non-Toxic and described by the manufacture as "Virtually Acid Free."