Description Sailor Blue-Black fountain pen ink is a deep, dark shade of blue-black, and smooth-flowing and specifically formulated to be safe for all fountain pens. The cardboard box contains 12 Sailor Blue-Black fountain pen ink cartridges, which are proprietary, and only fit Sailor fountain pens that accept cartridges. Sailor fountain pen ink is made in Japan, and is very well behaved, has good flow, and is easy to rinse out of your fountain pen. Sailor Blue-Black ink was formerly called Sailor Jentle Blue-Black. 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 $59 for US customers, and for orders over $250 for our Canadian customers.