Description Pilot Iroshizuku Take-sumi fountain pen ink is a very dark shade of gray that is almost black, inspired by the color of 5 year old bamboo plants burned into charcoal inside an oven. Pilot Iroshizuku inks are known to be smooth flowing and well behaved, and the 50ml glass bottle is a cleverly designed bottle with an innovative dip at the bottom to make for easy filling of your fountain pen, when the ink level runs low. Made in Japan, each Pilot Iroshizuku ink name derives from the expressions of beautiful Japanese natural landscapes and plants, all of which contribute to the depth of each individual hue. 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.