These work just great and are easy to refill.

I know this ink will not clog the work s up on any pen I own

Not all pens work well with all inks

This ink looks great, flows freely, fills easily, and (most important, works immediately!

The seal/fit is great on the feed tube, it sits well in the housing, the screw-plunger action is smooth and sturdy, and all-around is working great with the pen and ink.

Work perfect for my fountain pen

I have a couple of Parker pens, and this works very well in them, but it's good in all my fountain pens

This ink is great when working with quills; or if your pen only uses cartridges - just use a syringe to refill those empty cartridges

This Quink Black works great will all fountain pens, flows well, dries

This worked really well.

I find this ink as well as the blue/black works great in my Lanxivi Hero Silver Flower Embossment Fountain

The ink works well and so far no problems and none anticipated.

The blue-black works well in all of the different pens that I own

Product as described work perfect and my older Parker Pen and I'm not riding with it

It's a rather cheaper ink that works!

Nothing fancy, original OEM ink cartridges work as expected

Good product and worked nice

I don't have special requirements as to my ink (e.g. water-proof, permanent ink), and so far this has been working very well for me

This worked great for my fountain pens!

It is easy to use and works extremely well with both my Parker fountain pens.

This inks works well with my Jinhao 159 fountain pen