Koh-I-Noor Rapido-Eze Cleaning Solution is cleaning fluid for the quick removal and maintenance of technical pens. It unclogs pen points, technical pens, calligraphy pens and airbrushes. This cleaning solution also dissolves dried ink on all pen parts. It is non-flammable and doesn't harm plastic or metal. Keep your pens clean for long-lasting use. Made in USA. 2 oz. container. Koh-I-Noor - bringing you the best in professional grade drawing and design.