Get a burst of color with Diamine's Ultra Green ink cartridges! Perfect for international size pens, these high-quality cartridges provide smooth writing and long-lasting color. Show off your unique style with a splash of Ultra Green. (Don't be green with envy, grab these cartridges now!)

These cartridges fit most fountain pens, if you're not sure if please refer to your owners manual or give us a call and we can get you the right cartridge for you pen.

18 Cartridges per box.

Diamine inks have been manufactured in England since 1864.