The Kaweco cleaning syringe is a practical cleaning tool for all Kaweco fountain pens. It is designed for clogged fountain pens and scratching nibs. An empty cartridge sleeve is attached to a 20ml syringe together with a piece of rubber hose. The syringe creates optimum pressure to remove impurities from the fountain pen. As a result, paint remains and particles disturbing the writing flow are flushed out of the pen.