Kaweco Mini Piston Ink Converters - two pack - For Kaweco Sport and Liliput Series - 0.47ml Filling Capacity -Fountain Pen Converter made for use with bottled ink

They fit Kaweco Sport as intended enabling a greater range of inks to be used.

Works really well thank you. Saves money and waste by switching to an ink converter.

I decided to buy these because I had difficulty in finding cartridges other than blue that would fit. So now I am able to use any colour ink.

I don’t like cartridges and the rubber converter was a bit annoying. And this is finally a perfect solution. I love it!

Good price, shipped much faster than expected, thank you.

They don't look anything like the picture - which looks metal and better quality - which is why I ordered them as they weren't cheap. But on the upside they do fit the Sheaffer Targa slim vintage fountain pen.

Leaks and doesn’t form good seal, ink flow is constantly disrupted. Expensive for what it is, overall rather disappointing

These converters are good, but Kaweco could do them better. As it can be seen, they have a single plunger rod only. It can be leaky. I am attaching here an image of a converter with a double plunger. The double plunger is better, because silicon grease can be placed between the two plunger rods, this making the converter work smoother and better protected against leaks.

Space efficient, and fit the Liliput well. Build quality is relatively flimsy compared to most converters, but about par with Kaweco's others.

Małe pióro i maleńki konwerter. Jeszcze nie używałem. Na razie mam kartrydże

These converters are excellent. They fit well and don't leak ink. While they do pull ink into the reserve it's more efficient to fill them using a syringe. Great product.

ドルチェのミニで使用 なかなか無いので貴重

Works good 👍