

🖋️ Write sharp, stand out sharper — the pen that means business.
The Uni-ball Signo RT1 is a premium retractable gel ink pen featuring an ultra micro 0.28mm tip for unparalleled precision. This 10-color value set offers vibrant, smudge-resistant inks paired with a comfortable rubber grip, making it the ideal tool for professionals and creatives who demand flawless, detailed writing and drawing every time.
| ASIN | B01N6ZE42N |
| Best Sellers Rank | #16,991 in Office Products ( See Top 100 in Office Products ) #527 in Gel Ink Pens |
| Brand | Uni-Ball |
| Closure | Retractable |
| Color | Black,Blue,Green,Orange,Violet |
| Customer Reviews | 4.5 4.5 out of 5 stars (909) |
| Date First Available | February 28, 2017 |
| Grip Type | Rubber |
| Ink Color | Black,Blue,Orange,Pink,Red |
| Is Discontinued By Manufacturer | No |
| Item Weight | 3.7 ounces |
| Item model number | SG_B01N6ZE42N_US |
| Line Size | 0_3mm |
| Manufacturer | Uni-ball |
| Manufacturer Part Number | UMN15528.10C |
| Material Type | Rubber |
| Number of Items | 10 |
| Point Type | Ultra Micro |
| Product Dimensions | 5.55 x 4.33 x 0.79 inches |
| Size | 1 Count (Pack of 10) |
K**E
Flawless and thinnest writing experience possible!
A lefty’s dream come true! No bleed, no smudge, perfectly smooth ink for ALL colors. I have no notes. I wish I had a million of these and never had to use another pen. The black is classic and I’m blown away by the smoothness of these colors! Please never stop making these, Uni-ball!
S**L
Great for detail work
Great pens for detailed art work
P**E
These are the best pens if you like micro point
Fun colors and the tiny points mean you can write a lot in small spaces. So far, no leaking, no ink interruption, no ink blobs, and they flow so smoothly and consistently. They are sturdy and not slippery. I hope they never stop making these micro point pens.
K**L
Game changer for Left-handers!
I’m a lefty! If you are too, I feel your pain. These pens are amazing! No smearing, which means the entire side of your left hand won’t be completely covered in ink after hours of note taking! We also write teeny tiny. The pens are so sharp and smooth it makes your hand-writing incredibly neat and precise. The best part is, it’s not limited to black and blue! The blue comes in 3 diff shades, although I do feel like the lighter colors in the pack are not intense enough to write but they are fine for underlining, starring, etc. The purple, black, red, and dark blues (2 diff shades) are all great! 10/10 for the lefties. I’m about to make my 4th purchase. I’m officially addicted!
D**E
perfect pen for a lefty
Great pens. I’m left-handed and have had a hard time finding ink that doesn’t smudge. These have been a lifesaver and last a long time. The packaging it came in was incredibly greasy and smelled weird. The black pen is a 0.38mm, not the 0.28mm that was expected.
M**0
Fine and clean!
Outstanding product. Uni-ball makes exceptional gel pens especially the ultra fine ones. Poor shipping: Ordered from DRAWER PLUS.
L**N
Performs very well
Excellent for Bible paper (onion-skin) notations
S**H
Love love love
Fine point and smooth writing
A**R
Its hard to find 0.28 pens I love 0.28 pens! I used to use the uni style fit 0.28 but they are also hard to find and this is quite similar,I am happy I have found these! I hope they continue to make more. So I can purchase more when they run out. Thank you!
L**E
I rrreeeaaallly hate writing and I have finally found pens that take my fancy. They feel incredibly cool to write with and I don't really understand why. I think it might be how thin the tip is because I've never really enjoyed the thing ones, not even back in school. I highly recommend these to anyone who prioritizes the feel of a pen when writing.
K**N
I LOVE these pens! If you like a very fine point pen, you will not be disappointed. I’ve used the black ones for years and was excited to find them in a range of colours! Warning: once you use these you will never be able to use any other pen again!
M**E
These are the nicest 0.28 gelpens to write with. They are not scratchy. The ink colours are true to the body.
I**E
Not very smooth writing pen. SIGNO has always been my favourite. These are disappointing, but ok enough. The price is to high.... wouldn't purchase again.
Trustpilot
2 weeks ago
5 days ago