The Kaweco Sport Mini Piston Ink Converter allows your favourite Kaweco Sport fountain pen to be filled with bottled ink, providing a sustainable alternative to disposable cartridges. Ideal for those who want a wider range of colours, longer writing sessions, or to reduce plastic waste.

Designed to fit all Kaweco Sport fountain pens, the mini converter is simple to use: attach it to your pen in place of a standard cartridge, fill it with bottled ink, and enjoy smooth, uninterrupted writing. Compatible with most fountain pen inks, it keeps your Kaweco pen performing beautifully while giving you creative freedom to choose your own inks.

A small, practical accessory that combines convenience, sustainability, and style — perfect for collectors, writers, and everyday pen users alike.