Fills easy, and simple to use. Great grab.

Finally, I can put a trustworthy converter inside of my capless pen that recently leaked everywhere!!

A reliable tool, though with a small capacity.

Easy to use and handy for using any ink

I have never written a bad review on this site, but this converter is ridiculous. I was having some issues with a new Pilot Metropolitan so I cleaned it as I was advised to do by Goulet staff. I decided to use a new Con-40 converter to do this, which I had ordered when I ordered the pen. For the first time I realized how worthless this converter is. While filling with water and then with the Goulet cleaning solution in order to make sure the nib was clean, I could see clearly for the first time that the converter will absolutely fill no more than halfway. It's just a waste of space. I guess the advice to use cartridges and refill them with a syringe is the most solid recommendation, since there is apparently no other converter available to use with these pens. But that is not worthy of a company that generally makes very good products. Shame on Pilot.

Nice converter! Still figuring it out.

I have two current-production Vanishing Point pens. Nice pens! The standard converters are awful. Neither will fill beyond a drop.

I can only fill this small converter halfway. Not recommended. Too much hassle.

Must have for pilot parallel pens

First, the video here is excellent! Loved the tip about filling halfway and inverting. As for the CON-40, it's probably not worth getting. You're much better off with a blunt tip syringe and just cleaning and re-filling a cartridge.

I have been unable to use the Namika vanishing nib (antique - not identified as a Pilot and probably well over 50 years old) pen that I inherited. Couldn't find either cartridges or a converter that fit until now. So wonderful to see the line created by this nib. I now carry it as my 'purse' pen. Thank you, Goulet for the recommendation. I don't understand the negative reviews for this converter but I'm very glad I ignored them!

Now I can use my favorite colors with my purse pen. Love it.

Works well

This thing just doesn’t do the work, period. Not only is it very small and ridiculously incovenient to fill, but it also leaks severely! Which gives constant mess inside and outside a pen.
Don't go tight-fisted and buy a CON-70 instead, if your Pilot supports it. If it doesn't, your best bet is to buy a pack of cartridges once and refill them with a syringe: that will give you 12 reliable “converters” for even lower price than one single useless CON-40.

So far so good. I’ve filled it and cleaned it a few times and it’s been easy and straightforward. I did take the advice I found on Goulet’s YouTube video to help get the most ink in and it worked like a charm.

Carefully packaged, arrived when expected, works perfectly with the Pilot Metropolitan pen.

My Pilot Metropolitan came with a squeeze converter that just made a mess, so I thought I'd give this a tet, and I'm glad I did. Works pretty well, but I recommend you watch Brian's video with tips for getting a full fill.

I don't really understand the hate with these. They have nice agitator bbs, the action is smooth and they aren't very expensive. Watch the Goulet video and load yours up. I've had zero problems with this converter.

I can understand why this converter could be frustrating to some. It doesn't hold a lot of ink and if it doesn't fill all the way, you're limited on how long you can use it before having to fill it up; However, I highly recommend watching GouletPens video with tips and tricks on this converter! It completely changed my perspective for this converter and now it's so easy to fill it to nearly max.

I like the capacity since I like to try out different inks. It's easy to use and clean. I watched Brian's YouTube video on how to fill this converter and I get a full fill every time. Love it!

Overall a good converter, I have been using it off and on for about 2 years with no major issues. If you are OCD about keeping things clean, the little capture ring inside the converter will hold onto ink regardless of how you try to rinse it out. To mitigate this I use an ink syringe to force a jet of water where the ink is stuck. Other than this one issue, this converter has been a major improvement on the squeeze converter, easier to fill and less likely to break.

I am not a fan of the squeeze converter for the Pilot Metropolitan. I love that this is clear so that I can always see my ink levels. I really hate that it's got an annoying air bubble when you're filling a pen from the bottle, but that's why Brian's got a video on how to avoid this. I personally just use my syringe to fill it, put it in the pen, prime the feed, and then add a pinch more ink using the syringe. I also use the syringe for cleaning it and that works well too.

Due to the negative reviews, I was pretty skeptical when I bought this, but after watching the tutorial and giving it a try, I have very little to complain about. Every pen has it's quirk; in the case of the Pilot Metropolitan, E95s, etc. it's the converter. Once you get the secret handshake down, it's not a problem and wayyyy better than the CON B (well worth your $6). The capacity isn't amazing, but it's what you can expect for a compact converter for smaller pens, so I can't take any points off for that.

Most of my pens are Lamy with convertors and they work great. This one I have to fill as much as possible, hold upside down, bleed out the air and fill the rest of the way.

A very smooth twist style converter. If you try to get a full fill you might be annoyed, but it's possible. Holds plenty of ink regardless. The ink stirring agitator beads are nice and give the pen a fun rattle.

Although I did have problems filling this initially, I managed to get it to full capacity after watching the Goulet Video on the converter. I'm glad with this converter overall and relieved that it doesn't leak like the Con-B that was with my pen originally.

So, I got asked to write a review of this Piston Converter... It's a Piston Converter... I could have gotten it at any supplier. What I will talk about is why I go to Goulet: great service, supper responsive, a little quirky, a sticker, and a sucker. What more can you ask! I buy all my fountain pens and supplies through them and have never had a bad experience!

I like that it has the ball bearings in it...helps with shimmering inks.

One nice converter that gives you plenty of ink for you normal dayswriting..Easy to fill if you need more.

There's not much to say about this, it's a piston converter and seems to work well enough. It fits my Pilot Metropolitan well and doesn't leak, the agitator beads may be helpful but I can't really say for sure without something to compare against. It holds a decent amount of ink, and is far easier to use than the squeeze converter that comes with the Metro, and it also allows you to see how much ink you have left in the pen.All around decent converter for pilot pens