Herbin Bleu des Profondeurs Ink Cartridge

Universal snap-in cartridges. Six cartridges neatly and securely packed in a cylindrical metal tin. Fits most fountain pens and rollerballs, except Waterman, Sheaffer, Parker, Lamy, A.T. Cross, Pilot/Namiki, Sailor, Platinum, Aurora, Fultz and Nakaya.