Discover the smooth, rich writing experience of Diamine's blue black ink. Crafted for use in international sized ink cartridges, this ink offers a deep, classic color that will elevate any writing project. Perfect for fountain pen enthusiasts and professionals alike.

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.