Caran d'Ache Chromatic Ink Cartridge, Hypnotic Turquoise, Pack of 6 (8021.191) Package contains 6 ink cartridges in Hypnotic Turquoise Can be used with most makes of fountain pens Made with intense pigments for a rich Hypnotic Turquoise color Filled with Swiss-made high quality Chromatics ink Quick and easy to insert