Use these ink cartridges in a Pilot Parallel fountain pen. The Pilot, mixable ink allows you to create beautiful colour blendings and gradations by touching the nibs of two Pilot Parallel pens together when working with two pens. Ink cartridges can even be switched in the pen to create gradated colour lines and mixed colours. T

his box includes 12 fountain pen ink cartridges, including one each of Black, Blue Black, Sepia, Violet, Blue, Turquoise, Green, Light Green, Yellow, Orange, Red, and Pink.