This works very well in my Cross Foundry fountain pen. The Cross converter I paid like $15 for was garbage. Cross converter easily came loose while this Schmidt converter has been rock solid stays in place so far and reliable.

Same review new enhanced photo. Works well in different pen.
Does not fit Taylor Swift.

I purchased this converter to use with my new Taylor Swift pen.
It does not fit. The metal ring at the twist mechanism is too large to fit in the barrel.
But it was perfect for another pen I had that needed a new converter.

Exactly what I was looking for!

I wish I'd ordered more of these.

I keep these on hand for filling my cartridge-fill pens with preferred ink colors. They always work.

Works as intended.

IIWII! What more can I say!

Excellent performance with first effort, no re-work to fill, strong seal without leakage during or after filling. Snug fit to base of nib.

Haven’t tired it yet been traveling

Was shipped very quickly and fits my pin my . So far it's working beautifully

Excellent quality, fits tightly - as it should, and works flawlessly.

product is fine. it doesn't fit the pen. not worth the hassle to return

I prefer branded converters and the Schmidt are quite good. I think I am even able to disassemble them when I have ink behind the gasket. I think these are great and I like to have a few extras on hand in case I need one. I still have a few pens that don't have dedicated converters and I am trying to make sure each pen has its own.

easy to fill, no mess

Exactly as described and just what i needed for an pen gifted to me a long time ago.

Great alternative to ink cartridges.

This Schmidt K5 converter is well made and works great. If you use bottled inks and like to change colors from time to time then I think this is the way to go. Note that this large converter (and others) will not fit into the barrel of the new Pelikan Ineo pens.

Perfect converter for my Diplomat Magnum pens. No leaks and always on point.

Would buy againp

Tried this in 4 different Waterman pens, and none of them work. Also tried them in multiple custom pens which take international cartridges, and maybe one or two of them worked. The metal section was too wide for some pens, and the plunger **** was too long for almost all of them.

Nothing much to say. It works!

I get one of these for every new pen I buy that uses a Standard Cartridge and doesn’t have a specifically paired converter from the manufacturer. Haven’t had any issues yet, nor do I ever expect to.

Its works very well especially on my Kaweco.

Didn't fit my Kaweco Student. Be sure you check that this is explicitly compatible with your pen!The Kaweco Student says it fits international standard short and long cartridges, and converters. I took this to mean that it would fit an international standard converter, but it does not. It got jammed in the body and I had to use needle nose pliers to extract it, crushing the converter.For anyone new to this like I am: look up the Schmidt K5 Fountain Pen Converter on JetPens, click Compatible Products, and make double sure your pen is listed there! Or do the opposite, look up your pen there and click Recommended Refills/Parts and see what converters are listed (helps to filter by Parts & Accessories -> Fountain Pen Converters).

These are basically unbranded Schmidt K5s. They are extremely nice international converters, probably the absolute best version there is. Operation is smooth, ink capacity is quite large, and they are easy to disassemble for maintenance. These do not come with any spring or ball to break surface tension, that may cause some inks to hang in the back of the converter. I have not had issues so far, whereas Lamy Z27 converters have given me ink flow issues (a stainless steel spring fixed the Z27). I got two of these, one for the Diplomat Traveller, which has a proper international standard nipple, and one for the Jinhao 911, which has a slightly oversized nipple. It fit both perfectly.

I have two Perkeos. This converter fits well and works. The end!

Use this in my Kaweco Perkeo and it fits perfect. Holds a fair amount of ink. Have not noticed any issues with leaks or anything like that so far.

I ordered a pen Goulet does not sell and it came with a Schmidt K5 converter. I wanted another converter specifically for shimmering ink to minimize the hassle that comes with cleaning the added particles. This converter appears identical to the Schmidt K5. The mechanism works smoothly and it holds a decent capacity if you like to change ink a lot.

Converter works great and is well made, but I had originally ordered it for my Kaweco Student. It doesn't fit the body of the Student so now it lives in a different pen.

Worked great. I had to make it fit my older Diplomat because the pen didn't quite take a full size converter. Either way, it was a good quality part that worked as advertised.