Diamine Majestic Blue ink cartridges contain high-quality ink that is one of the finest inks available. The ink is water-based non-toxic free-flowing ink. Diamine fountain pen ink cartridges are the standard international short size. They are available in over 20 different colours and are suitable for a wide range of fountain pens. Please note that the colour chart is only to give an indication of the colour and the actual colour may vary due to scanning and monitor displays. Pack of 6 cartridges.