








🖊️ Write Your Future in Ultra-Fine Style
The Uni Ball Signo Knock Ballpoint Pen RT1 features an ultra-fine 0.38mm tip with smooth black ink, housed in a lightweight, ergonomic design with a convenient snap closure—engineered for professionals who demand precision, comfort, and style in every word.
| ASIN | B00B57W4QU |
| Best Sellers Rank | #68,012 in Office Products ( See Top 100 in Office Products ) #1,663 in Gel Ink Pens #1,796 in Ballpoint Pens |
| Brand | 三菱鉛筆 |
| Closure | Snap |
| Color | Black |
| Customer Reviews | 4.4 4.4 out of 5 stars (797) |
| Date First Available | March 5, 2013 |
| Grip Type | Rubber |
| Ink Color | Black |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.16 ounces |
| Item model number | UMN15538.24 |
| Line Size | 0.35 |
| Manufacturer | Uni |
| Manufacturer Part Number | UMN15538.24 |
| Material Type | Plastic |
| Number of Items | 1 |
| Point Type | Extra Fine |
| Size | 1 Count (Pack of 1) |
A**A
New favorite pen ever
I used to write with the muji gel pen and decided to go for this une for its aesthetic and based on reviews, I am not disappointed. I usually never write reviews but this one is so worth the money. It writes fast the flow is amazing the 0.38 is perfect for my writing. Aesthetically it’s so elegant too the grip is perfect. Only drawback if I had to really be picky if that it smears a little if you don’t let it dry but it’s perfect for me as I’m right handed. Go for it!!
L**H
Best Pen
Uniball Signo 0.38 is my favorite pen regardless of color. Smooth flow, not scratchy like some ultra fine point pens, and no smudging for left handed writers!
Y**R
Best pen I have owned
Writes ultra fine. I love how the ink writes so smooth.
F**P
My new favorite pen
This pen is my new favorite. I use it as my primary pen for taking notes and recording information at my Security Services job. It's very comfortable in my medium sized hand, and has a very positive click when retracting or engaging. At .38mm it makes a very fine line and can write as small and legible at you want. The body is very sleek and is one of the more attractive pens I've seen. I gave it five stars because it's fantastic. That being said it is a .38mm. If you write very "vigorously" you may end up punching nice little holes in your paper. This pen is so smooth I don't even worry about it, but it can happen. I am in no way a pen expert, but I love how well this one lays down a nice thin line.
K**P
10 count does not mean you're getting 10 pens-misleading/false listing
The pen is gel, not ballpoint just so everyone knows, and 10 count pack of 1 gets you ONE PEN not TEN. I like the pen.
T**N
Good pen, ink is true RGB Green, very vibrant.
Pen tip is sharp so will tear fibrous/grainy paper if you put too much pressure in writing. Green is very vibrant and bright, think RGB Green. I'm looking for a hunter green ink pen but this will do for now. Good pen overall.
A**R
This is absolutely my new favorite pen. I'm a left-handed writer and always have ...
This is absolutely my new favorite pen. I'm a left-handed writer and always have to deal with that annoying smudge on the side of my hand every time I write across the line. This pen, with it's incredibly quick drying ink, fixes that. That, and the very fine, smooth-writing point, make it an easy choice for almost all my writing. I will note that the tip is incredibly fine, at 0.38mm, and there are instances where I'd prefer a bolder point. Still, 5 stars, no question. Buy this pen.
G**E
Great pen
This has always been one of my favored pens. Every time I lose it, I immediately by another. The ink is okay if you like gel, but I usually switch it out for a jetstream rollerball refill.
I**A
The Uni Ball Signo Knock Ballpoint Pen RT1 0.38mm is one of the best pens I’ve ever used for precise and smooth writing. The ultra-fine 0.38mm tip delivers crisp, clean lines, making it perfect for detailed notes, journaling, or any task requiring precision. What stands out most is how smoothly the pen glides across the paper without skipping or smudging. The ink is quick-drying, which is great for left-handed writers as well. The grip design is ergonomic and comfortable, allowing for extended use without hand fatigue. The sleek, minimalistic design of the pen is also a nice touch—it looks professional and feels durable. It’s the perfect balance of functionality and style. If you’re looking for a high-quality ballpoint pen for everyday use or professional tasks, the Uni Ball Signo RT1 is an excellent choice. Highly recommended for anyone who values precision and comfort in their writing tools.
T**N
スラスラ滑らかに書けて左利きでもインク詰まり全く起きません。インクはすぐ乾くので手が汚れたり紙に写ったりもなく気に入っています。 発色も良くてリピートしています。
Y**I
Good
N**A
Ich benutze den Signo RT1 sehr gerne um schnelle Notizen oder Pläne in einem Notizbuch festzuhalten. Die Gel-Tinte des Kugelschreibers trocknet sehr schnell. Selbst schnelle, dahin "gekritzelte" Notizen verwischen nicht und lassen sich sehen. Die dunkelblaue Farbe lässt sich von der Evernote-Dokumentenkamera problemlos erfassen und sieht, in der Realität, wie auch im digitalen Notizbuch gut aus.
ゆ**う
書きごごち良いです。カリカリ感がなくてすらすら。おすすめです。
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