Description Sailor Blue-Black fountain pen ink is a deep, dark shade of blue-black that comes packaged in a sturdy 50ml cube-shaped glass bottle. Sailor Blue-Black ink was formerly called Sailor Jentle Blue-Black. 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. We offer Free Shipping on all orders over $59 for US customers!