Easily refill your Sailor fountain pen with these official ink cartridges, available in four essential colors: black, red, blue, and blue-black. Their ready-to-use format is suitable for everyday writing as well as note-taking, correspondence, and light calligraphy. Each box contains 12 water-soluble dye ink cartridges.

Designed for Sailor fountain pens that accept standard brand cartridges, they allow for clean and quick replacement, without an ink bottle or converter. However, they are not suitable for certain specific models, notably the very fine Chalana pens and piston-filling models such as Realo.