Refillable ink cartridges are a way to be a little greener and use ink that you can’t find in cartridge form. The Pilot CON-40 Fountain Pen converter fits Kakuno Fountain Pens and Pilot Parallel Pens, both of which we stock in our shop.
They are a little tricky to fill, so we made a tutorial to demystify the process. In this short video, Maria demonstrates how simple it is to use the Pilot converter. One extra tip: multiple fills can help fully load the converter!