Kuretake sumi ink is a dark gray, glossy ink that's opaque, lightfast, and economical. It comes in a 60 mL bottle, twice as big as most inks. The wide mouth makes it easy to use with dip pens or brushes for all kinds of calligraphy, including Chinese and Japanese lettering. This ink is water-soluble, so you can create washes and blending effects with water. Made in Japan.