Koh-I-Noor Rapidograph black India ink is extremely versatile waterproof drawing ink for use on paper, film, cloth. Rapidograph universal black drawing ink is free flowing, fast drying with permanent adhesion, yet is easily erasable from drafting film. Great for technical pens, lettering pens, airbrushes, more. High-opacity. 3/4-ounce bottle. #3080-F Rapidograph black India drawing inks are made in the USA.