The ink Kaweco converter is suitable for all DIA, Student, Allrounder and Special Kaweco fountain pens. It allows you to use bottled ink instead of standard international ink cartridges.
Kaweco Ink Cartridges - Royal Blue
Kaweco Mini Piston Converter for Kaweco Sports Series Fountain Pens
Kaweco Classic Sport Fountain Pen - Black
Kaweco Skyline Sport Fountain Pen - Mint
Kaweco Nostalgic Octagonal Sport Clip - Gold Plated