Pilot Hi-Tec-C Coleto Gel Ink Pen Refill 0.5mm, 5 Set Black (Japan Import)

Refills times 5. Easy to load black ink

Someone will buy these for this reason: you can cut them down to size to fit inside the older version of the Muji gel ink pen. However, the long black piece of plastic shows through a little from the translucent Muji pen body. Nonetheless, these are confirmed to work for that purpose.

I love these multi-pen refills! Makes my life easier at work! Smooth writing, no skipping.

These are my favorite for multi-colored pen as an RN. They write very smoothly, can be ordered in various thicknesses (I like very thin), smudge very little, and are vibrant colors so even light colors show well. The black has a rich black color, but still very thin. I just wish the refills held more ink.

sort of flimsy but overall love these pens

I am a huge fan of pilot hi-tec c coleto's!! I am an even bigger fan of bundle deals! So put those two together and I am one happy camper! I personally use my hi-tec c coleto for note taking in school, so as you can imagine, I burn through these black ink cartridges. These cartridges are excellent because they are kept fresh with a little red dot on the tip so that the ink doesn't dry out during transportation! I also feel that this nib allow the ink to flow more smoothly when you first start writing as it hasn't already previously flowed through the tip and allowed the tip to get gunked up during the shipping process. I will continue to buy these for as long as I am in school!

I use to be a BIC 4color color user but over the past year, I switched to the Pilot Coleto pens and ink refills.In general, all the refills I have used are great.

These fit my multi pen perfectly, just don’t seem to last long. I tend to use black the most when writing, so it makes it convenient to have so many replacements handy. Again, just don’t seem to have a lot of ink, which lowers the value for the money for me.