三菱鉛筆

Uni Ball Signo Knock Ballpoint Pen RT1 0 28mm Color Black UMN15528 24

86+ bought in the past month

$4.88$19.99
sizeS

About this item

  • Package Dimensions: 1.0 cms (L) x 1.3 cms (W) x 14.2 cms (H)
  • Product Type: Writing Instrument
  • Package Quantity: 1
  • Country Of Origin: Japan
$4.88
Was $19.99Save $15.11

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Product details

Brand三菱鉛筆
Writing Instrument FormBallpoint Pen
ColorBlack
Ink ColorBlack
Age Range (Description)Adult

Technical specifications

manufacturerUni
brand三菱鉛筆
item_weight0.16 ounces
item_model_numberUMN15528.24
is_discontinued_by_manufacturerNo
colorBlack
grip_typeSmooth
pencil_lead_degree_hardnessH
material_typePlastic
number_of_items1
size1 Count (Pack of 1)
point_type[INF] Medium
line_size0_3mm
ink_colorBlack
manufacturer_part_numberUMN15528.24
best_sellers_rank#51,349 in Office Products ( See Top 100 in Office Products ) #1,280 in Ballpoint Pens #1,295 in Gel Ink Pens
date_first_availableMarch 5, 2013

Product videos

Product video 1

Customer reviews

4.4660 ratings

Customers say

Customers find this ballpoint pen well-made and appreciate its smooth writing and super thin line.

★★★★★

So FINE!!!

SadieNovember 9, 2025✓ Verified purchase

You actually can write on a piece of rice! Read more

Review image 1
★★★★★

Favorite pen

Cubbert PalmerJuly 23, 2018✓ Verified purchase

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. Read more

★★★★★

Best and finest I've found.

WhoAmI?August 12, 2017✓ Verified purchase

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. Read more

★★★★★

Love this pen

NathanAugust 7, 2024✓ Verified purchase

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! Read more

★★★★☆

Super fine, and accordingly so, not a dark line.

Lisa MarieJuly 5, 2023✓ Verified purchase

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 Read more

★★★★★

Great Pen

AnonAmissSeptember 26, 2019✓ Verified purchase

I've been looking for a pen I can use to write notes on floor plans. These floorplans leave very small places in which to write, and gel pens and ballpoint pens just don't work. This pen is WONDERFUL. I can write teeny tiny words and they are still legible. Even other people can read what I have written. You do need to be careful and not press too hard when writing because the tip will go through the paper -- it is sharp. However, this is the best pen I have found for writing in small places. Five Stars Plus ++++++++++ Read more

★★★★★

Wow just wow

MirandaNovember 13, 2023✓ Verified purchase

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. Read more

Review image 1
★★☆☆☆

Middle of the road

Richard AshleyMarch 4, 2024✓ Verified purchase

It's ok so far. Kind of scratchy and the ink skips a bit. Read more

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