Posca acrylic markers have their own customer base. These waterproof markers are coated with opaque alcohol/solvents that are not visible. The inner ball inside the body mixes the paint for a uniform consistency and optimal results. Suitable for paper, glass, cardboard, wood, porcelain, metal, textiles, ceramics, plastic and shells. Can also be used with water. The PC 5M Fine Tip Set includes 8 pieces: black, white, red, yellow, blue, green and pink.