Non-toxic, water-based markers can be used on almost any surface. The alcohol- and solvent-free opaque paint covers well, is blendable, dries quickly, and can be overlaid when dry. The pen contiains a valve mechanism for a tight paint seal and a ball within the barrel that mixes the paint, allowing for even paint consistency, texture, and continued, optimal results. These versatile markers can be used on paper, glass, cardboard, wood, porcelain, metal, textiles, ceramics, plastic, and much more without priming (the markers will, however, produce different results on certain surfaces with a primer). The PC-1MR ultra-fine tip marker has the same qualities as a paint marker, but in the form of a fine tip pen. It's designed for professionals and beginners, requiring an ultra-fine and consistent line in a wide selection of colors. Brand: Posca