These paint markers use oil-based paint, making your arts and crafts project last longer. Not only are these permanent paint pens, but they can also be used on a wider variety of craft surfaces. These permanent markers can be used on paper, glass, wood, plastic, canvas, stone, metal, ceramic, rubber, and more. Details: Includes assorted colors Set of 18 (including 2 metallic colors) Oil-based permanent paint makers Reusable storage Writes on most surfaces