Koi Coloring Brush Pen is a water-based brush pen from Japanese Sakura. The flexible tip provides both thin and wide brush strokes. The tip has good stuns and returns directly to its original shape when you lift it from the paper. The water-based and odorless ink allows the colors to blend together for watercolor-like effects. The pens are no more than 14 cm long and therefore easy to take with you!
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