Universally usable marker. The watercolor marker for unlimited application on all surfaces. The medium tip allows for precise strokes and beautiful coloring. Quick-drying and highly lightfast. Suitable for almost all surfaces. Create beautiful artworks with Uni POSCA markers. This versatile tool is suitable for various surfaces such as wood, textiles, glass, ceramics, paper, stone, metal, canvases, and plastic. Uni POSCA also offers many effects. Create watercolor, blend colors together, or explore the blowing technique. There is something for every hobbyist or artist. Shake your marker well with the cap on. You will hear the typical clicking sound. Press the tip of the marker several times onto your sheet of paper to fill it with color. If the marker loses its color intensity during use, simply shake the pen again, of course with the cap on to avoid any creative splatters on the wall, and you can continue with your artwork. The tip of the Uni POSCA markers can be easily cleaned under running water. If the pens do dry out, no problem. The POSCA markers can be soaked in water overnight. If the tip still dries out, it is easy to replace. The following tips are available for the following models: PC-1MC, PC-3M, PC-5M, PC-7M, PC-8K, PC-17K.