5 Pcs Rotating Ink Absorber Converter for Fountain Pens, Universal for Refilling Ink from The Bottle Spin Piston Fill Ink Absorber

If your favourite pen is having problems to hold ink, these are the way to go forward.Easy to fit almost any pen, these universital replacements are simple to use, and hold ink well.An ingenious fix for a problem that has been around for a very long time.

This doesn't fit my standard fountain pen. I believe the bore needs to be bigger. Ordered another product. Not there fault really and they may be good if they fit but it didn't.

Both my wife ab=ns I have different Cross fountain pens, and they fit neither, way too big. Waste of time, definitely not universal as stated.

Honestly, I thought it was universal side. This are too big for a nice fountain pen. Maybe good for a cheap one but not mine.

I’ve used these converters in my fountain pens, some of which are vintage, and they work perfectly.