Schmidt K5 Push In Deluxe Fountain Pen Ink Converter (Pack of 2)

Perfect fit for Amazon basics pen. Never liked cartridges. This converter will give me more freedom to choose the ink color that I want. Fill it up and it will hold slightly more ink than the cartridge the pen came with. This is a screw type converter and not a plunger which I am not a fan of. One converter cost almost as much as the pen though, even when you buy them as a pair. Also remember this is just an ink container. Just by getting one of these, if you are looking to find a magical improvement in your pen, then this is not what you would want to buy. The performance of the pen depends on the nib quality, the ink delivery from the nib, the quality of the ink, the paper you are using and of course the way you write. Definitely satisfied.

Bought it for my Pelikan Twist pen. Functioning is perfect.It's a little loose in the socket, but that's because Pelikan's "standard" refill size is a little wider than what other brands use. Still, perfectly usable.

I bought this this to fit into the Amazonbasics fountain pen and it fits (and works) like a charm. I am not sure how well it fits into other pens though as I haven't tried.There's also little 'behind-the-piston' fluid accumulation from when you are washing it between changing inks (a problem I have faced with the Parker syringe types).

The product is very nice. I have a Pierre Cardin Chancellor and the cartridge fits perfectly. It also helps me avoid having to buy plastic cartridges for refills.

Not fitting Amazon basics fountain pen

Good quality and genuine product.

This is the push in, not the screw in type Schmidt converter. Fits into Muji aluminum fountain pens. The one that I'm using also does not have any dry up issues. Moderate capacity, the same as standard international.

Have good build quality and fits well. Price is high.