Parallel Pen 2.4mm by Pilot
Unique parallel plate structure achieves a more beautiful and sharper handwriting than existing calligraphy pens. Mixable colors when using two Pilot Parallel Pens each with different color cartridges to produce beautifully gradated lettering by touching the nibs together. Each set comes with a pen one black and one red ink cartridge converter to clean the pen and a nib cleaner. 2.4 mm.