This is the highly sought after and highly recommended Japanese Sumi Ink.
Moon Palace Sumi Ink is excellent for both pointed pen and broad edge work. Gives wonderful hairlines, sits up a bit on the page with a bit of a shine when used with a pointed pen. Waterproof when dry.
Repackaged into a 20ml leak proof glass jar.
Note: This ink is NOT to be used in a Parallel or fountain pen.