Pilot Hi-Tec-C Coleto Gel Ink Pen Refill 0.4mm, Blue Black, × 6 Packs/total 6 pcs (Japan Import) [Komainu-Dou Original Package]

Perfect refills for my favorite pen, feels more sustainable than buying a whole new pen pack when mine run out. The ink is super smooth, never gets air bubbles or clots, the fine tip is great for taking notes while working in the hospital.

Love these refills. I use my HI TEC C COLETO pen every single day. The refills never skip and I love how fine the writting is!

This is exactly what it is: 6 refills of blue-black .4mm Gel ink for your Pilot Hi-Tec C Coleto. Works great and was delivered on time. My only complaint for [all Hi-Tec C Coleto] refills is that the ink capacity per refill is so small. I use my pen daily, about 1-2 paragraphs (or +/-500 words equivalent) each day. At that rate, ink refills last about 3months. That adds up quickly. Maybe there's a 'high capacity' refill I'm not yet aware of? Please make a high-capacity refill??? 8-)

Super experience and writing quality!I'm using it with ensso pen.Exactly the one experience which I was looking for.

Love these ink replacements and it’s more cost effective than purchasing from specialty pen website that also charge shipping.

Only one word to describe these pens... AWESOME!!!!!

It works great and more units than others but each ink has such tiny amount of ink.

I ordered many different colors of these refills so I'm using this same review for all of them.I usually use the Hi-Tec-Maica pens, but the ink ran out so I wanted to try something new. I decided to use the Hi-Tec-C because I thought the refillable ink cartridges would be better for the environment. However, these refills do not last long at all, so I have to us more, resulting in more waste in the trash from the empty cartridges. I am a student, so I take a decent amount of notes, but I don't think it's any more than normal. For reference, one Maica pen would me a little over a year, but one Coleto refill lasts me one to three weeks (one week for black refills because that's the main color I take notes in, and about three weeks for a colored refill because I only take side notes with those).Although these pens write great, I will not be repurchasing them because each refill comes in its own plastic bag, which counters my original reason for buying these refills (sustainability).