Sheaffer® Fountain Pen Piston Converter Push-in Style.

The Sheaffer Piston Fountain Pen Converter is a refillable ink reservoir designed to replace disposable ink cartridges, allowing you to use bottled ink in your Sheaffer fountain pen. This converter is compatible with most Sheaffer fountain pens that accept the Sheaffer Classic ink cartridge, including models like the Prelude, Sagaris, Intensity, 100, 200, 300, Legacy, and Valor.