Original OEM Pilot fountain pen ink cartridges, available in a box of 12. These cartridges feature a high-quality formula that extends the life of your pens, providing ultimate value. The eco-friendly design helps prevent material waste, making them a responsible choice for users. The black ink color is ideal for use at home, in the office, or at school, and is compatible with Vanishing Point and Plumix fountain pens (sold separately).