WatermanDeluxe Fountain Pen Ink Piston Converter

Slightly hard to twist

I suppose, some people don't want to mess with filling their pen from an ink bottle, and therefore don't need the converter. When I recently bought two Waterman pens as gifts, I bought two converters as a matter of course. I seldom, if ever, use the cartridges that come with the fountain pen. In fact, back in the 50's if it had cartridges, we called it a cartridge pen. If it had the lever on the side to fill with a bottle, then we called it a fountain pen. Now, they seem to be lumped together.

Works as it should on my waterman hemisphere

This converter works just as expected in my stainless steel Waterman Graduate pen. it holds a good amount of ink for a converter and I've had no problems with it yet. It appears to be a genuine Waterman, as it is stamped with the Waterman name on the metal part.A converter is a must for me as I like to use my bottled inks. Imo, pens should include a converter but most of them don't.For some reason they sent me more than one; I appreciate the bonus. The converters were not in a box, just a plastic bag. As long as this converter continues to work as it does now, I have no problem with it. A little pricey for one, but okay with my "bonus."I have no idea if these Waterman converters are the same as the "standard international" size or not. There is conflicting info on that, so I ordered the Waterman converter for my Waterman pen.The Waterman Graduate pen is a great pen, btw, especially for the $13 price! For an inexpensive pen it rivals my beloved Pilot Metropolitans, lol. (The Metropolitan includes a squeeze converter but costs a few dollars more than the Graduate.)I have a Waterman Hemisphere pen on order. If the additional converter has any issues in that pen I'll edit this review, but I expect it will work okay.

This fit my Waterman Allure, which is nice. I couldn't see any signs of leaking upon loading. However, there was the faintest hint of a stress fracture in the barrel of this converter. However, it never leaked, even after an hour of writing. So, it's not perfect, and I may have been lucky, but it gets the job done so I will keep it. I will probably stick to international standard pens and converters going forward, however...

Fits my Carene perfectly. Made a huge difference in ink delivery as my original developed a hairline crack in the seal and was letting way too much air through.

I had thought about this for some time and finally ordered one. Now, I wonder why I waited so long! I got it from Onzolo and it arrived 2 days after I placed the order! It installs as easily as the cartridges it replaces and with even less effort. The filling was so simple, I was amazed. Brilliant design for sure. And I no longer am tied to cartridges. The converter is about the same price, sometime less than a box of cartridges. And you can use any brand, type, color of ink you desire. Don't wait like I did, order up from Onzolo today!

This device fits the Waterman fountain pen well. It is easy to use and holds a decent amount of ink. You should easily recover the cost of this device over the cost of ink cartridges.