Easy to use, just remove the tip area of the pen, fill it with paint or ink, and finally screw the tip back to begin drawing.
Design with ball, avoid watercolor or pigment solidification, and mix the ink well, so that you can enjoy a smoother painting. Widely use for painting on glass, mirrors, paper, cloth, shoes, clothing,metal, wood, ceramic and so on.
Suitable for artists, beginners, experienced people, etc.