Kaweco Ruby Red Ink Cartridges - Pack of 6 | Premium Fountain Pen Refills for Calligraphy, Journaling & Office Use

Kaweco ink cartridges are conveniently sized in the international standard, making them compatible with any fountain pen. Simply remove the front portion, extract the empty cartridge, insert the new Kaweco cartridge, and enjoy an enhanced writing experience. All Kaweco inks are both cruelty-free and vegan, ensuring ethical and sustainable use.