SchneiderInk Cartridge, Standard Format, Ball Closure, Refill for Fountain and Cartridge Rollerball Pens, Black Ink, Box of 6 Cartridges (6601)

I use these cartridges with two BEILUNER Fountain Pens that I have. The cartridges work very well, with smooth flowing ink and good color. I am also impressed with their water resistance. It is far superior to other fountain pen ink cartridges that I have used. Highly recommended!!

quickest ship ever! product quality is as expected.

I have a $600 Cartier Diablo fountain pen and have not been able to find the actual Cartier brand ink cartridges in black. I purchased this one and one other brand I saw here and it snapped right in place and it working fine. I do believe it may be better than the 3X the cost Cartier ink because it dries instantly where the Cartier would smudge before letting it set for a few seconds. I do wish I could find an ink adapter for this pen to use ink out of the bottle. Bottom line all worked well.

Beautiful Color and Flow. I use it in my Amazon 10 dollar fountain pens and it works beautifully

Great product

I put a refill in my fountain pen last night. I tried writing with the pen, no ink flow. This is normal and I gave it time. Still no flow. Let it sit upside down over night and still no flow. This is a pen I used in the past, worked great, ran out of ink and bought these to refill it. Maybe my pen is the problem, like dried ink blocking the flow, but for me, this is my issue. It is a good black color, just no ink flow for me sadly.

Good high quality ink

What else can I say?! Easy to use, shipped fast, good value.