Koh-I-Noor Syringe for Cleaning Pens, Use with Rapid-Eze Cleaning Solution (Sold Separately), 1 Each (3068SYR.RED) Designed to be used with the Koh-I-Noor Rapido-Eze Cleaning Kit Use with Rapid-Eze Cleaning Solution for the quick removal and maintenance of technical pens Unclogs pen points, technical pens, calligraphy pens and airbrushes Dissolves dried ink on all pen parts Solution is non-flammable and doesn't harm plastic or metal