Waterman 56010W Fountain Pen Standard Ink Converter
This converter fits all Waterman fountain pens sold in the U.S. Simple plunger-driven ink container refills easily to use liquid ink neatly and conveniently with your fountain pen. Liquid ink is smooth-flowing, leaves a solid, confident line, and adds to the sophisticated experience of fountain pen use.
Using a refillable converter rather than disposable ink cartridges saves money and reduces waste.