Extra fine 0.4mm x 4 colors (black, red, blue, green) + 0.5mm sharp multifunctional pen
The thin shaft is 0.5 inch (12 mm) for easy carrying, and the size is easy to fit in the pen holder or shirt pocket.
Uses the same water-based pigment gel ink as the "Ballsign" series.
It is also compatible with cream paper used for notebooks, and other items, and has a vivid and dark ink that can be used for writing.