uni-ballSigno RT1 Retractable Gel Ink Pen, Ultra Micro Point 0.28mm, Rubber Grip, Black Ink, UMN-155-28, Value Set of 5
Thumbnail 1Thumbnail 2Thumbnail 3Thumbnail 4

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

4.6/5
Product ID: 43706154
Secure Transaction

Details

  • Brand
    Uni-Ball
  • Writing Instrument Form
    Roller Ball
  • Color
    Black
  • Ink Color
    Black
  • Age Range (Description)
    Teen
Ergonomic rubber grip for all-day comfort
✒️Smooth, water & light-resistant gel ink
🖊️0.28mm Ultra Micro Point for precision

Description

🖋️ Write sharp, write smart — never miss a detail!

  • VALUE PACK POWER - Set of 5 pens means you’re always prepared, whether at the office, home, or on the go.
  • FADE RESISTANT INK - Waterproof and light-resistant gel ink keeps your work crisp and professional over time.
  • PINPOINT PRECISION - Ultra micro 0.28mm tip delivers razor-sharp lines for flawless notes and sketches.
  • COMFORT MEETS CONTROL - Soft rubber grip ensures fatigue-free writing during marathon meetings or creative bursts.
  • RETRACTABLE CONVENIENCE - No cap, no hassle—quickly ready to write and safely stowed with a click.

The uni-ball Signo RT1 is a sleek retractable gel pen featuring an ultra micro 0.28mm tip for exceptional precision. Its smooth, water- and light-resistant black ink ensures your writing stays vivid and professional. Designed with a comfortable rubber grip and offered in a convenient value pack of five, this pen is perfect for professionals who demand reliability and style in every stroke.

Specifications

ManufacturerUni-ball
BrandUni-Ball
Item Weight1.76 ounces
Product Dimensions5.91 x 2.17 x 0.79 inches
Item model numberSG_B06Y3S2XKL_US
Is Discontinued By ManufacturerNo
ColorBlack
ClosureRetractable
Grip Typerubber
Material TypeRubber
Number of Items5
Size1 Count (Pack of 5)
Point TypeUltra Micro
Line Size0.28 millimeters
Ink ColorBlack
Manufacturer Part NumberUMN15528.24*5

Reviews

4.6

All from verified purchases

J**S

Very Point Writing

I love these pens. The ink flow is good, no bleeding on my pages, very comfortable in my hand. I like a very fine nib and this pen doesn't disappoint.

K**6

Work great!

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.

S**H

My go to, fine pen

Perfect line weight for journaling, not too thin or thick, and lovely, delicate looking handwriting. Ink flow is great, dries fast, and doesn’t drag. No bleeding. This will be my go to pen

N**S

Great for medical use

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.

J**S

Broken pen :c

One of the 5 pens came broken. Although it’s only 1, it’s still a slight disappointment for my money. But the rest write amazing the smooth fine tip is perfect for my italic-like handwriting :)

A**Y

Fine point ink pen

I like the way it writes.

K**.

Fantastic!

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).

S**A

Very fine point!

I LOVE THESE PENS!! This is exactly what I was looking for! I'm using them in my planner and journaling. The writing is smooth and very fine but I can still see the blank ink. Definitely gonna get more when I run out. I'll see how long they last but so far they are great! I'm not sure about the price but seems reasonable to me.

Common Questions

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

Shop Global, Save with Desertcart
Value for Money
Competitive prices on a vast range of products
Shop Globally
Serving millions of shoppers across more than 100 countries
Enhanced Protection
Trusted payment options loved by worldwide shoppers
Customer Assurance
Trusted payment options loved by worldwide shoppers.
Desertcart App
Shop on the go, anytime, anywhere.
₹ 1221

Duties & taxes incl.

Indiastore
1
Free Shipping

with PRO Membership

Delivery Partners: Shadowfax, Delhivery

Free Returns

30 daysfor PRO membership users

15 dayswithout membership

Secure Transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

Uni Ballsigno Rt1 Retractable Gel Ink Pen Ultra Micro Point | Desertcart INDIA