Sheaffer Piston Converter Fountain Pens (86700), fits Prelude, Sagaris, Intensity, 300, and 100 fountain pens
Sheaffer Piston Convertor for Sheaffer fountain pens enables the use of bottled ink in place of fountain pen ink cartridges. Compatible with Prelude, Sagaris, Intensity, 300, and 100 fountain pens.