Posca Acrylic paint markers are non-toxic, water-based, and can be used on almost any surface. Alcohol and solvent free, opaque paint covers well, is blendable, and dries quickly. For use on paper, glass, cardboard, wood, porcelaine, metal, textiles, ceramics, plastic, and more - all without priming. They can even be used like watercolor when mixed with water and a brush. The PC-1M extra-fine, bullet tip marker is a favorite for children and adults for coloring and writing. Single marker, Yellow.