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

Amazing pen if you need to write small and still be able to read it.I work as an intensivist in a busy MICU and of the substantial number of pens I've used over the years these are by far the best for small detail dense writing. I like to keep a single sheet of paper with me for my patient list and having the ability to pack everything I need to keep track of in a small section of the page only really works with these pens. I have tried 0.25mm pens however they either write too faint or actually cut the paper, something that has never been an issue with these 0.28mm pens.Plus the gel ink dries quickly, the pen head glides easily over the page, and the stock pen body is comfortable in hand. A very good value of a pen that out classes ones costing ten times as much.

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).

Love these pens! I have ordered them multiple times! I love the very thin and fine point! I use them every day for work, but could be used for trace drawing and other thin linings!

I'm constantly on the lookout for the best pens I can find that are super fine tip. I generally land on micron pens because of the 0.20 fineliner they carry but they aren't the most comfortable to write with for long periods. I was super excited to find these 0.28 tips from uniball signo but admittedly didn't have high expectations and expected alot of skipping. I've used three of them out of the set I bought and they haven't skipped a single time. Comfortable to write with over extended amounts of time. Everything I was looking for in a pen. 10/10 recommend and 100% will repurchase.

This pen is amazing for its fine tip. It has allowed me to make my notes even more compact. The only downside to the pen is that it is made of thin plastic. I doubt it is very durable, but considering the price I really don’t mind.

Great line and ink in these. Truly fine and precise without much skipping on thirsty or toothy paper. Can be a bit straggly. But overall, I love the quality of the pen cartridge itself. It's great to draw with.I find the pen body itself to be somewhat bulky and awkward. The lowest part of the barrel right above the pen point is very dome shaped. The end does not have an elongated taper like other fine point pens I tend to like. Pilot Precise V5 RT is one of my favorites, but their finest point is only 0.5. This pen is quite a bit finer, and I love that about it -- but I have a hard time seeing the pen tip while I'm working because of the large size of the barrel at the tip.Another reviewer added a photo of them writing with the refill cartridge on its own. I had actually done the very same thing when I first started experimenting with the pen. I just took it out and began drawing with it. The plastic on the cartridge is very rigid, so it's easy to use this way as a minimalist pen on it's own. The feeling of that is actually very precise and great. So if you're struggling with the bulk and profile of the actual pen body, the refill on its own is a neat option.My ultimate fix was to just put the Uni cartridge into a Pilot Precise V5 RT body. It works great. If you do this, you WILL need to loosen the threads a quarter turn to click the cartridge tip out. Then tighten. Then do the same to retract. It's no big deal, and functions normally with a quick turn (and click) -- similar to old mechanical pencils. Since this actually identifies which pen has a Uni cartridge on board -- it's a win/win as far as I'm concerned.Myself, I'm just used to a Pilot pen body, and prefer the more narrow tip and better rubberized grip. So for me, it's the best of both worlds adding this great, ultra fine cartridge to my favorite pen body. For me, the Uni vs Pilot body feels like the difference between a jumbo and standard crayon in my hand. Both could certainly be useful for different applications.Overall, I'd buy these pens again. The line quality alone is worth the time figuring out how to best use them for my own needs.

I’ve always preferred a 0.5 black gel clicky pen but recently discovered there is such a thing as 0.28, so I went on the Amazon hunt and found these gems! I work in a very specialized critical care unit and in addition to computer charting, we also have hourly flow sheets to document on and the tiny boxes look so much neater with vital signs and IV drip numbers written in them with these pens! They are the perfect thickness and also the ink is still dark enough to see clearly. unfortunately I took them to work with me and only have 1 left out the entire pack after my co-workers tried them out and they mysteriously started missing from my bag…. lol definitely 5 star worthy!

The General Surgery Residents love these pens.