WatermanDeluxe Fountain Pen Ink Piston Converter

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.

As the title reads.Fits very snug, no issues drawing up ink, or with ink flow. Now time will only tell how long it will last.It was bought for and fits an old 1970s/1980s waterman executive slim profile pen with a medium tip nibb.The convertor bore opening 0.4mm if I recall correctly.Hope that helps.

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!

I'd recently purchased a Waterman fountain pen and it came with the cartridge rather than the converter. To my pleasant surprise the pen can take either and so I purchased the converter for it. It's super easy to install and works perfectly, no mess, very clean, neat, and tidy. No cartridges that might leak ink when you swap them out, no need to clean the pen either. Simply dip the pen into the ink bottle, twist the plunger a few times to purge out all the air and draw the ink up and you're back in business. The Waterman converter works just as well as any of the others out there for other brands and helps to keep ink messes to a minimum.

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...

Slightly hard to twist

product as expected, no issues. Would interact with them again.

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.