Deleter's line of inks features a formula for every purpose. The highest-quality ink, Black 4, is a deep, rich black that dries to a completely waterproof finish. Liquid inks can be used with a brush, dip nib, glass pen, or technical pen. Black 4 is also approved for use with alcohol markers, making it a great match for Copics.
Deleter is a brand known for supplying manga artists in Japan with screentones, pens, paper, and more.