Metallic Rub-Ons are fun and easy to use. Excellent for highlighting and accenting your favorite craft project. Apply with your finger by working in a circular motion, breaking down the colors and bringing out the full metallic sheen. With 4 kits of 7 colors each, you have a wide range of color selection. Metallic Kit #1 (White Label) Kit #2 (Yellow Label) Kit #3 (Blue Label) and #4 Kit (Green Label). They must be used on hard type craft surfaces such as glossy or heavy card stock, Kromocoat, Vellum, Ceramics, Wood, etc.