These oil-based, quick drying markers can be used on practically any sureface with opaque, glossy, intense color. Valve-action marker writes on virtually any surface: glass, metal, wood, rubber, stone, plastic, paper, vinyl, leather, canvas and more. The archival-quality, acid-free, oil-paint ink is fade-, water, and abrasion-resistant, ideal for projects that need to last. Ink is permanent and certified AP-non-toxic.