Koh-I-Noor Dye-Based Universal Drawing Ink 0.75 Oz. Bottle, Brown is a semi-transparent dye-based ink with an intense color laydown. Extremely versatile, fast drying ink. For use on paper, vellum, drafting film and tracing paper. Waterproof and erasable on drafting film. Ideal for use with Koh-I-Noor Rapidograph pens and other technical pens, crowquill pens, dip pens, airbrushes and paint brushes. Made in USA.