Description A box of 12 Sailor Sei-Boku Pigmented Blue-Black fountain pen ink cartridges. Sailor fountain pen ink cartridges are proprietary, and only fit Sailor fountain pens that accept cartridges.Having trouble deciding between colors? Use our Ink Comparison Tool to quickly and easily view different colors side by side.We offer Free Shipping on all orders over $50 for US customers, and for orders over $250 for our Canadian customers.
