This 8 piece POSCA marker set can be used on almost any surface you can dream up - paper, glass, cardboard, wood, porcelain, metal, textiles, ceramics, plastic and much more. The fine bullet tip markers are great for both coloring and writing clean lines. This versatile marker is ideal for a wide range of creatives, from beginners to professionals. It is a fluid and fun choice for art, craft, graffiti or décor. The marker tips can be rinsed with water to keep marker intact, allowing you to blend without fear of ruining your marker.