This Fountain Pen Piston Pump K2 Converter from Caran d'Ache features an easy to use twist-to-fill mechanism. Free yourself from the limitations of cartridge refills. This converter will allow you to use any type or color of bottled ink that you desire. Designed for use with the Caran d'Ache 849 fountain pens. Fits most full length fountain pens, shorter bullet style fountain pen barrels may be too short. Fine Swiss engineering.
3" long X 1/4" diameter