Marspark 6 Pieces Universal Fountain Pen Ink Converter International Fountain Pen Ink Cartridge Converter (Red)

They're lamy converters. At least the ones I got were.Assuming they're not counterfeit, they seem to work the exact same as the normal lamy converters, and you get 6 of then for what you would spend for 1. Good value for me.Two ways to go about using them, either like a piston fountain pen or dunk the cartridge in ink and use the piston, either way works and is fairly easy to do (just keep some paper towels or tissues handy, it does get messy)Exact size of lamy converter and works for the lamy pens, ink quality depends on what you're using, some is good some is horrible.

Great value for the cost. These fit several pens besides the Lamy pens they are targeted at -- the Ooly pens and the Zebra V-301 also take these converters as well. Seems like decent build quality and a great alternative to the more expensive brand name product.

As a newcomer to the world of fountain pens, I found using this to quite easy. My preference was to place the converter directly in the ink so as to get a better fill and I did not experience any leaking with careful handling. It popped right into my Lamy Sari without issue and works beautifully. Seeing that converters can retail for $2.00 to $3.00 a piece (depending on the company), a package of six for around $12.00 is reasonable value.

These are fake Lamy-labeled converters. They fit in my Lamy Safari just fine. Do note it has small protrusions just like the Z24 that must be aligned.

All of the cartridges are marked “Lamy” and “Germany.” I’m very happy with this purchase!

Great quality, size is perfect for my Lamy pen, very easy to use, the ink flows nicely, functions exactly as advertised, and is definitely a value for the money. If you have a Lamy fountain pen I can definitely recommend these converters.

It works but doesn’t fit a Mont Blanc

Great product, more than I bargained for , lot of value