Write on glass, metal, wood, plastic, chalkboards and paper! Opaque paint markers feature water-based pigments that are lightfast, odorless and xylene-free. Waterproof after drying; use cleaner to remove after paint has dried. The 6mm chisel tips are great for creating lines with consistent widths. 8-color set includes black, blue, green, light blue, pink, red, white and yellow. AP Seal, non-toxic.