good cartridge

cartridges don't work

Perfect to keep on hand for any fountain pens, as the cartridges seem to run out quickly

Love the pen and love these cartridges, I remember struggling with fountain pens many years ago but thought I would try again

These are very convenient refill cartridges

After years of inky fingers from loading converters from bottles (I know, I know, you can do it very cleanly once you get good at it - I just never did!), these cartridges have reawakened my love of fountain pens

Its hard to beat Namiki Black and although you can save money by buying those enormous bottles, the cartridges are awfully convenient.

No complaints about the ink or about changing the cartridges in a pen

For my first attempt I did press firmly, do not twist or can ruin the ink cartridge

Well, not only was that incorrect- only ONE cartridge out of all of them was black ink!!

These are great cartridges.

The cartridges all seem fine, and the first one loaded without any issues

Great cartridge, easy to use!

The cartridges are cheaper than, say, Parker Cartridges for a reason--they are simply smaller

I love these larger cartridges

I am pleased with these refillsas they work as well as the cartridges that came with the pen.

The blue cartridges are a little bright for my taste, and almost looks like the ink was running out.

A good cartridge for my pen.

Excellent cartridges.

The cartridges are easy to use and do not leak when carried as a back up to the one already in the pen

These cartridges definitely are easy you just pop them in with no mess whatsoever

These cartridges have consistently been the best I've used

The cartridges are super convenient for use as a student

I recently got back into using fountain pens and these cartridges make it so much nicer to use and refill!

This is a great ink cartridge although proprietary product

Very affordable compared to ink jars, good quality ink that is pretty smooth considering it is from a cartridge, easy to load and cartridge allows for mobility when traveling (keep spares on hand).Cons:

These cartridges work great with the Pilot Pens that are very reasonable in price and write so easy and with no drips or scratchyness like other fountain pens do.

Super convenient for writing on the go, I always carry a spare cartridge in my fountain pen case.

These cartridges work great with the Pilot Pens that are very reasonable in price and write so easy and with no drips or scratchyness like other fountain pens do.

these cartridges fit well and don't leak, the ink flows well in the Pilot pen that I use them in

These cartridges work great in my Pilot Metropolitan pen

I still prefer bottled ink, but these little guys do what they are made to do, and aren't nearly as expensive as cartridges from many other brands.

As you can see in my photo, these cartridges are right at 2-1/4" in length

These cartridges are wonderful and contain a healthy amount of ink

The cartridges are blue and if possible I would love to see more choices in color

The cartridges are defective - they don't pop open when you push them into the fountain pen, so no ink can flow

I finally found the right ink cartridge.

These cartridges are very neat

These cartridges are great.

The colors are strong, the cartridges hold more than enough ink and drain all of that.

It's a nice, solid, black ink, and the cartridges are easy to replace.

I recommend these cartridges.

Its hard to beat Namiki Black and although you can save money by buying those enormous bottles, the cartridges are awfully convenient.

Great cartridges!

I have several Pilot and Namiki pens, and the cartridges are great.

I love these cartridges

Not worth returning for one bad cartridge but not happy about it either!

Perfect cartridge refills.

Good ink cartridges

The cartridges are great and I like the color

When the old one is empty, just replace with a fresh filled cartridge

I would have given the cartridges a 5 if the pens that use them did not leak into the cap of the pen.

Silly me, I thought ordering the pen, AND the refill cartridges for it all at once from Amazon meant the cartridges would A) WORK and B

It is not as good as the black cartridges from the same company

The cartridges don't fit as well and leak all over.

I love these cartridges and have had great success with the black and the blue.

These are very good cartridges and the price was great

I love my fountain pen and this is a great refill cartridge but the purple is so dark it's almost black

This definitely was the correct ink cartridge for my pilot fountain pen

I love the ink and how smoothe it writes, however package came with obvious leaking, two cartridges had “bled out” and were empty, a third cartridge was only 2/3 full.

There is higher ink quality found in the higher end ink jars, but these cartridges operate just fine in my fountain pen.

very good cartridges but low volume

Both the cartridges and the Pilot fountain pens are remarkable

It writes very well using Pilot Namiki blue-black and black ink cartridges

Excellent replacement cartridge, as expected from the Pilot brand.

The cartridges are convenient and I have had no issues from leakage while carrying spare cartridges around in my pockets

Good cartridge, fits all pilot fountain pens

These cartridges work just fine

Love the color and the ink cartridges for ease of use.

These cartridges work great in my Pilot Metropolitan pen

The cartridges don't fit as well and leak all over.

Cartridge works perfectly with my Pilot MR Retro Pop fountain pen

I find the disposable cartridges to be much easier to deal with than the "bladder" cartridge or any other refillable reservoir

Arrived OK!They work as

nice i like it

and I' Very Satisfied with the product