Schmidt K5 Push In Deluxe Fountain Pen Ink Converter (Pack of 2)

Thus far, seems to work well!

Excellent quality. Clean fountain pen prior to adding converter. Fill converter and firmly push in with a slight rotating motion of the converter. It takes quite a bit of force. Very pleased with the German workmanship.

Perfect fit for Amazon basics pen. Never liked cartridges. This converter will give me more freedom to choose the ink color that I want. Fill it up and it will hold slightly more ink than the cartridge the pen came with. This is a screw type converter and not a plunger which I am not a fan of. One converter cost almost as much as the pen though, even when you buy them as a pair. Also remember this is just an ink container. Just by getting one of these, if you are looking to find a magical improvement in your pen, then this is not what you would want to buy. The performance of the pen depends on the nib quality, the ink delivery from the nib, the quality of the ink, the paper you are using and of course the way you write. Definitely satisfied.

Fast delivery.. Fit in my muji perfectly.. Thx seller

Excellent converter that has a spacious reservoir and fits my Visconti Eco-Logic. Very happy with this purchase.