Pilot Fountain Pen CON-50 Converter

I have one of these and they DO NOT work with he Pilot Cavalier fountain pens. You can install them on the Cavalier but then you cannot close the cap because the pen is thinner than this converter. The converter itself works well just be careful what you are installing it on.

YES, this converter will work with most pilot fountain pens including pilot parallel and decimo. The only thing that I don't like, since the front body part of parallel is semi-transparent, the ink will stuck in there after you dip the nib into ink. It's kind of annoyed me. The BEST solution and probably cheaper solution is Private Reserve Cartridge filling units (24CAR). You can refill any ink cartridge with any bottled ink. For parallel, you still have that small ball inside the cartridge to stir the ink and it hold much more ink than this converter too.
For other pilot fountain pens, this converter works wonder.

I purchased this converter for my Pilot Decimo. The CON-50 converter fits great, and it doesn't leak or anything, but I'm having trouble getting the converter to fill up with ink all the way. I've been dipping the pen nib into the ink and using the converter to pull up the ink thru the nib, but despite pulling the plunger back and then forward to try to get the last little bit of air out, there's a space in the clear section of the converter that I can't manage to fill with ink. So, I'm giving this a halfway decent review because the space in the converter means that I have to refill it more frequently.

Also, I have a Pilot Cavalier fountain pen, and this converter DOES NOT FIT WITH THE PEN BODY SHUT, as mentioned by a previous reviewer. It would be ideal if this were just a little bit less wide, because I have a love-hate relationship with the CON-20 (with the balloon/sack). To be clear, this converter fits in the nib part, but you can't close the pen body with this converter.

At first, I thought the Con-50 would not hold much ink because of its unique design - the plunger does not go past the first half inch of the barrel. This means you have to suck up and purge ink through the pen a few times to completely fill the converter. Overall, not a bad investment if you want to move into the wonderful world of bottled FP ink!

I have no problem with this converter. I strongly suggest following the instructions on using converters following the link above.