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🖋️ Write sharp, write smart—join the 10-year legacy of Uni-Ball Signo fans!
The Uni-Ball Signo UM-100 Gel Ink Pen features a precise 0.5mm micro tip that writes a crisp 0.3mm line using waterproof pigment ink. Its Uni-Flow system guarantees smooth, uninterrupted writing, while the transparent barrel lets you track ink levels easily. Made in Japan with a durable tungsten carbide ball tip and ergonomic grip, this pen is a trusted choice for professionals seeking reliability and style in every stroke.
| ASIN | B005644GKK |
| Best Sellers Rank | 706,079 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 7,568 in Gel Ink Rollerball Pens |
| Brand | uni-ball |
| Colour | Blue |
| Customer Reviews | 4.2 4.2 out of 5 stars (122) |
| Date First Available | 5 Dec. 2013 |
| Grip Type | Ergonomic Grip |
| Ink Colour | Blue |
| Item Weight | 12 g |
| Line Size | 0.5mm |
| Manufacturer | Uni-ball |
| Manufacturer Part Number | 4902778947081 |
| Material Type | Plastic |
| Model Number | BC30647 |
| Point Type | Extra Fine |
| Product Dimensions | 15.8 x 6 x 3 cm; 12 g |
Z**N
I am using the Uni-ball Signo UM-100 Gel Ink Pen - 0.5 mm pens for over 20 years. They fit perfectly my hands and fingers. They write thin and don't leave any marks or ink on the paper. In plus, they have a nice color, be the blue, the red or black or black blue. I wish there were less of the same colour in a pack, and instead 3-4 colours in the same pack. I couldn't find them in any stationary shop only on Amazon and online. Anyway, I love them.
J**P
Although the pen is described as 0.5mm, it is 0.7mm.
B**R
I got these after reading a recommendation and they do fit the bill. Nice pen, good for writing notes, journal, business etc, no spilling or smudging. Just one thing - these are the longest pens I've ever used, don't know why the barrel is so long, but I got the hang of it after an intial head-scratch. Recommended.
Z**O
The ball size for the pen is 0.7 mm not 0.5 mm which makes the font size wider and uncomfortable for me.
G**T
Love these pens. Seem to glide as you write.
Trustpilot
1 month ago
2 weeks ago