Uni-ball Signo RT1 Retractable Gel Ink Pen, Ultra Micro Point 0.28mm, Rubber Grip, Black Ink, UMN-155-28, Value Set of 5

I'm one of those people who has an unusual obsession with office supplies. As such, I have tried numerous pens in hopes of finding the ~perfect~ pen to use in my everyday life. These are not the ~perfect~ pen; however, they are pretty great regardless. They are comfortable to hold and use thanks to the rubber grip, and the tips are SUPER fine as promised. After using Micron pens for the first time, I found that I favor pens in the .25-.4mm range for writing as the lines are finer and cleaner, and these definitely meet that expectation. So far, I haven't had any issues with bleeding, smearing, skipping, etc. I think it's because the ink comes out so thin, it dries before it even has a chance to smear; but then, I'm also right-handed, so unless I'm especially careless, I don't have many opportunities to smear my writing. I will say that, because the lines obviously come out thinner and therefore somewhat lighter than .5+ pens, people with poor eyesight may struggle to read things written with these .28mm pens, but I wear glasses so it doesn't bother me. Price wise, I think that these are a good deal. They cost about the same amount as the Papermate InkJoy gel pens and Tul gel pens I've been using, but you get more in a pack and the quality is great. Plus, anything finer than .5mm is frustratingly hard to come by. I definitely recommend giving these a try.

My go-to pen for years. No skipping, no ink blobs, just clean, thin (0.28) lines through and through till the last drop of ink. Best quality pen I have used and very difficult to find a good thin pen like this! Sleek and well made.

This pen is fantastic! It writes smoothly, doesn't scratch the paper, and makes the thinnest lines that I've ever seen in a writing pen while still being dark enough to easily read. Some art pens are comparable, but are not really meant for continuous writing like you can with these. I use the pens to fill out care plans and med cards in nursing school and they work nearly perfectly for pages of writing. Recently, only one of the pens that I have been using frequently started skipping slightly even though there's still a decent amount of ink in the pen. Other than that, they have been perfect, especially because the grip/soft area continues to the tip and is comfortable to write with continuously. I've never loved a pen like I love these pens. I'd rate them 9.99 out of 10 (0.01 taken away for the one pen out of the 5 that skips after writing for a while).

I absolutely love these pens, they write super pigmented and smooth. Ive not had an issue with these pens at all, its very light weight if thats what you prefer in pens and they last a while though I write a ton! They have a silicone grip and it feels nice and helps with tiredness of the hand when writing.

These are literally my favorite pen to write with. I’m a sucker for thin point pens and it makes it easy when I’m writing notes or monitoring anesthesia and I have the smallest space to write.

TLDR: crisp, smudge free, fine writing BUT clogs way too easily For context, I normally use FRIXION synergy knock 0.38 erasable pens or the Pentel Energel fine tip pens. I work in healthcare and like that the FRIXION pens are erasable, but they are not very concentrated in color. I like the Energel pens, but they smudge very easily. I was excited to try this pen because I heard great things about it. I normally like thin pens, so this was one that I have been wanting to try. When I first wrote with it, it was beautiful. Super fine lines, very crisp, and very good smudge resistance. If it stayed like this, I would’ve said it was my new favorite pen! It is very lightweight and comfortable to write with. However, it clogs way too easily. I think it was within 2 to 3 days that my first pen clogged up with no valid rhyme or reason. I tried soaking it in hot water. I tried multiple troubleshooting mechanisms, but nothing seemed to get it back to its normal writing capacity. I opened up another pen and within a week it did the same thing. I thought it might have been the notepad I was writing on for some reason, but even after changing notebooks, I noticed the same problem. It is very frustrating to have gone through two pens of this five pack in less than two weeks. Hopefully it was just a defective batch and I’ll probably try to order it again in the future but for now it doesn’t meet my expectations. Super disappointed since it writes so beautifully. I included a picture of what the dead pen was writing like. I had thrown the pen away after it died on me during my shift so I wasn’t able to show the comparison on the bottom. For reference, I included the other two pens I usually write with so there’s a visual comparison of what a brand new pen writes like.

This pen is my new favorite. I love the clicker, the ink flow and the quality.

Everyone around me knows i am ballistic for these pens. Some of the finest tips you’ll get on the market for a decent price before descending into ultra-fine technical pen hell. One of these pens has lasted me several months of daily use. The pens are also nice to look at, no weird grips. Artists- the pen has very limited range on the amount of surfaces it can draw on (because of the super fine point, will scratch). Drawing over dry watercolour should be safe but gouache is a probably not.

I usually use a 0.38mm tip so it took me a while to get used to the 0.28mm tip but now I use it all the time. The pen writes smoothly and dries quickly.

J'aime les stylos fins et je suis assez picky. Ils glissent bien, sèchent vite, sont retactables. Ce sont maintenant mes préférés et je les rachèterai sans hésitation.

The ink quality is not good. May be it is dry. With 0.28 tip i wanted to try it. It has a feeling like when the refill is about to finish

0.28 kalemin en zarif hali. Hafif ve pürüzsüz yazmak bu kadar keyifli olmamıştı

I don't know where these have been sitting, or maybe it was the batch I got - but the ink has run dry for all of them. Have to throw out. Also, they are super super fine. Like, they scratch the page fine. Or maybe that is just mine as the ink wasnt working. One of the worst things I have gotten on here.