- There is a window at the pen tip, so it does not protrude! The “PROPUS WINDOW” series features a pen core with a window, which is a feature of the series. Characters can be seen while drawing the line, so you can clearly mark without protruding from where you want to draw the line.
- A lineup of 15 colors that can be selected according to tastes and applications! A total of 15 colors, each of 5 colors, each of 3 types: basic color with well-defined color, light color of soft and gentle color, smoke color of calm and calm color
- Thin, ultra-fine nib suitable for writing letters! By changing the core to a finer (0.4mm) plastic pen core, it can be used not only for underlining, but also for character writing, as a marking pen and as a color pen for character writing.