


🖋️ Write sharp, stand out sharper.
The Uni Ball Signo Knock Ballpoint Pen RT1 features a super fine 0.28mm tip delivering precise, clean lines in vibrant blue ink. Designed with a retractable mechanism and weighing just 0.16 ounces, this pen combines convenience and comfort. Made in Japan, it embodies superior craftsmanship perfect for professionals who demand excellence in every word.
| Manufacturer | Uni |
| Brand | 三菱鉛筆 |
| Item Weight | 0.16 ounces |
| Item model number | UMN15528.33 |
| Is Discontinued By Manufacturer | No |
| Color | Blue |
| Closure | Retractable |
| Material Type | Plastic |
| Number of Items | 1 |
| Size | 1 Count (Pack of 1) |
| Point Type | Super Fine |
| Line Size | 0.3mm |
| Ink Color | Blue |
| Manufacturer Part Number | UMN15528.33 |
S**E
So FINE!!!
You actually can write on a piece of rice!
C**R
Favorite pen
This is my favorite pen I've ever owned. I like writing with very fine lines, and I was using the Staedtler fine point ballpoint pen before. While the description of this pen says ballpoint, it is in fact a rollerball, the difference being that ballpoint pens use a thick oil ink and rollerballs use a liquid ink. I prefer rollerballs because they are darker and smoother, and I find more consistent. The Staedtler pen I was using had previously been the thinnest pen I'd ever used, but because it was a ballpoint it just wasn't consistent, and they are like $10 a pop with no refills. The Uniball Signo RT1 series is much thinner, and because it's a rollerball, way darker and more consistent. I love it so, so much.
W**?
Best and finest I've found.
The problem with trying to find the perfect fine point pen is that how fine it writes depends too much on the paper you're using as well as the technique. I spent too much money looking for the finest point writing tool I could find that would not bleed or smudge. Perhaps it's the fact that most fine point nibs are either fountain pens or felt tip- both of which tend to have very temperamental results. I've wasted money purchasing too many pens that claimed to be finer than this one, but for whatever reason (probably paper type) would often write in lines that were almost twice as thick as this one. It wasn't until I came across someone who claimed to me that this 0.28 nib pen actually wrote finer than many 0.1 nibs out there that I decided to give this a try and they were correct! I have pens that claim to be finer than this one and yet this one clearly writes much finer than they do without any bleeding or smudging. So I can write as tiny as I like without the compromises. I've now purchased a set of these with various colors, but since I can usually only travel with one pen- If they make a multicolor pen with 4 or 5 colors in one with a point this fine I will then truly be ecstatic.
L**E
Super fine, and accordingly so, not a dark line.
When I want a very fine line, this is the pen I go to. It gives the thinnest line out there! I don't use it on everything, though. There is one issue: because the line is so fine, it is not dark. So for everyday documents I use the .37 or .5 pen
N**N
Love this pen
This pen writes very smoothly and comfortably. The grip feels nice. It provides enough of a “scratchy” writing experience that is satisfying to me, and I love how fine the point is. The ink color is visible and doesn’t smudge. Overall, it’s my favorite pen and worth the money!
B**.
Absolutely gorgeous to write with!
I do a lot of grading, as a teacher, and this is my favorite pen with which to grade!
M**A
Wow just wow
Never knew .28 point pen would be so great. It's an unbelievable smooth pen very light and the ink is a great deep black that stands out even though the point is very thin. I really love it.
H**E
Not worth it
Wrote fantastically.... Once. Then it crapped out and only wrote in a really skippy, scratchy, running-out-of-ink way. I tossed it
C**N
le plus fin des stylo gel que l'on peut trouver. Ecrit très bien malgré la finesse du trait. Parfait pour ceux qui aiment écrire petit.
A**S
Yo tengo la letra chica y no es raro que con las puntas gruesas se vea amontonado y sucio. Encontré una que puedo escribir inclusive del tamaño de una hormiga y se ve limpio, nítido y no lastima la muñeca. Vale mucho.
T**O
極細でカリカリ、大好きです。 字が綺麗に見えます。 今までに何本買ったかわかりません。 接客業で、お客様用のペンが行方不明の時から出すこともありますが、どこのですかとよく聞かれます。お店で売りたいくらいです笑
P**6
Wanted a fine point ballpoint pen for drawing, this fits the bill perfectly. Very pleased.
L**A
In realtà darei 4 stelle alla penna, che ha una scrittura scorrevole ed extrafine, e una, solo perché non si può dare di meno, al venditore che ha spedito l'oggetto sporco senza un minimo di protezione, idem al corriere che ha piegato la busta di cartone in mille parti pur di farla entrare nella cassetta della posta. Per fortuna la penna non si è rotta.
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