Fountain Pen Ink Cartridges 20 Total Blue Horizon Ink These will fit Lamy Fountain Pens Our inks use the European ink treatment formula which drastically improves ink-flow quality. ITF™ Ink Treatment Formula that: - Drastically improves ink-flow quality - Extends cap-off time - Lubricates and protects the ink feeding systems from corrosion and clogging - Improves in drying time on paper
