Great Ink!Writing is very smooth, clear and crisp, no dragging, skipping or blotches - I love it!A great product.

The ink was dry, but I love these refills when they work

The medium ink is perfect.

so I never have to use a cheap, inferior disposable ink pen!

Very nice ink definition.........but a bit slow to dry for smudge free, but certainly acceptable...bolder than most med blue refills also.

I enjoy a bold, dark ink that is smooth and doesn't skip while writing.

This ink is really nice and dark and flows well.

but I like blue ink to write with, not black ink

Smoothest writing ink I have ever used!

The ink works great

Thank you Pilot for this wonderful ink.

This ink container (much like a narrow plastic drinking straw) can be removed and replaced by the user!I cannot wait to see if other pens that I own share this undocumented feature.

They work flawlessly and the ink comes out smooth as butter

Nice smooth ink flow

Terrific ink, second time I've ordered it for my Dr. Grip pens

very smooth ink flow.

The ink writes spotty at times and is thick, ink builds up in small clumps at the tip.

Amazing Ink!

I've always loved this ink, although it easily runs out

This ink leaks and comes out splotchy.

I HATE black ink, so having these came in handy

I enjoy a bold, dark ink that is smooth and doesn't skip while writing.

Writes lovely and smooth, but god forbid you drop your pen or put your purse down a little too hard, the ink immediately starts to leak and makes your pen useless.

great ink and pen!!!

Also easily leaks ink

The pen and replaceable ink make it so easy for me to write

People compliment my pens all the time, and love how nice and dark this ink is.

My favorite ink cartridge!

Every time you pick up the pen to write a new word, the ink leaked such that your next word has a thick blob in the first letter

I like that the weight of the pen is toward the writing end (due to the short fat ink tubes), making it almost effortless to write

Extra pleased to receive them so quickly and get back to writing with fresh ink in the best pen in all the land!

This is my favorite pen and ink that provides top quality production on the daily notes I need to write up on my patients.

will be a sad conclusion if I can't find better ink: the pen will be useless!

The original ink that came in the pen lasted a long time but the last 2 sets of refills all clogged up prematurely.

The ink doesn't last as long as other pens, maybe a few months worth of writing, but I absolutely love the way it writes, and I've ordered this product from Amazon at least 3 times