

🖋️ Write sharp, write smart — the pen that means business.
The Mitsubishi Pencil UMNSP38.30 Uni-Ball One P is a premium gel ballpoint pen featuring a precise 0.38mm tip, a stabilizer mechanism for steady writing, and a refillable design. Its compact, coffee-colored barrel offers ergonomic comfort and stylish appeal, making it a top choice for professionals who demand both performance and sustainability in their everyday writing tools.
| ASIN | B0BZHFSKXT |
| Best Sellers Rank | 6,383 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 109 in Gel Ink Rollerball Pens |
| Brand | 三菱鉛筆 |
| Closure | Retractable |
| Colour | Coffee |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,533) |
| Date First Available | 18 Sept. 2023 |
| Grip Type | Round |
| Ink Colour | Brown |
| Item Weight | 10 g |
| Line Size | 0.3mm |
| Manufacturer | 三菱鉛筆 |
| Manufacturer Part Number | UMNSP38.30 |
| Material Type | Plastic |
| Model Number | UMNSP38.30 |
| Number of Items | 1 |
| Point Type | Conical |
| Product Dimensions | 11.68 x 1.39 x 1.92 cm; 10 g |
| Size | 1 count (Pack of 1) |
D**W
Top marks
Love this. Pen is a great thickness, grips very well, has a lovely click action and the clip can be squeezed open, which is a great detail feature (great fidget pen!). Carefully and thoughtfully designed. Fantastic value, excellent build quality, superb design. Included gel cartridge is very stable on page, though feels a little harsh due to the very precise and small tip - personally I love this pen for tasks like wireframing, sketching/annotations and other quick stuff, but others may actually prefer this feel for writing. Note that it IS a refillable pen, so you're not stuck with this if you don't like it. Overall, just a really handy, very well-made and eminently pleasant pen at a fantastic price.
J**A
The best pen I've ever written with
I saw an advert on these pens being "award winning" so as a stationary nerd had to get one. I was surprised by the price and really liked the colour options across the market. The writing experience is smooth and consistent whilst still comfortable to write with!
N**Z
Nice pen, scratchy nib :-(
Lovely little pen though didnt keep but let me explain why. Its a lot shorter than normal pens, but whilst that was ok, i found the nib a little too scratchy for my tastes, I was expecting a 'smoother write' and maybe its my paper ( i tried a few different books) or perhaps i'm heavy on the hand, all that aside, its just wasnt for me. Have given it 4 stars as its a lovely colour and held nice, but the tip was too scratchy.
A**X
Uni ball one- small and mighty pen :)
Absolutely AMAZING pen I deffo recommend this pen! I have problems when I’m writing or studying. My hand starts to ache because I press down on my pen so hard. This pen is an amazing solution and I’ll tell you why - the pen stops you from gripping tightly -the pen is small so you don’t have much to grip tightly either. (It’s small but an amazing size to be honest ) Five stars from me
M**S
Excellent little pen
Excellent. Easy to hold. Inking clear.
A**R
Short fine tip
Writes very smoothly with a very fine tip! It was much shorter than I was expecting though, not your usual pen length.
A**R
One of the best ones I have ever used.
One of the best ones I have ever used. The ink dried instantly and is a delight to write with.
E**E
shorter than expected, but rests comfortably still, lovely ink flow and girthy diameter
I was pleased that what I received was a genuine Uni One P import, and after using it for a little bit I've found that the girthier diameter of the main shaft makes it easier to maintain a secure hold for longer writing sessions - it feels like my finger muscles are less tense than vs thinner standard pens. The pen length is shorter than I expected at about 115mm overall, but I actually didn't find this to be an issue because it still comfortably rests in the nook of my thumb - any shorter and it would miss, and I have quite large hands. The gel within writes a lot more smoothly than a regular ballpoint - it's crisp and opaque and seems to have a nice consistent flow which is giving me even-width lines strokes,.
J**N
Bought this pen going, its expensive but it got good reviews. It arrived, and its really short and stubby. Threw me off at first. But then I wrote with it and by the gods did the heavens part and angels sang! For someone like me who writes in chicken scratch, this makes it legible (mostly). Its comfortable, writes awesome, non smear and a joy to take notes with. My only wish is that for it's cost it should have some kind of refill. But best pen I've used in ages, better than anything we have at the office. People keep trying to steal it so I keep it on me.
H**.
Es algo cara, pero vale la pena. La escritura es fluida y seca muy rápido, por lo que se puede usar un marca textos sobre la tinta sin ningún problema. El único problema es que luego ya no la quiero usar para que no se me acabe tan rápido jaja.
O**E
Paisa gela pn nadach kela
P**A
Écriture très fluide, fine et coloris pastel sympa
M**.
I've been wanting this pen for awhile but the other place where I saw it at, costed a bit more. So I found it on Amazon. I really like the color, its a light brown color. And it writes smoothly. I kinda wish they had refills for these. I also like that its thicker so it feels comfy in the hand. And its short, easy to carry around in a small purse 😎🤟 I haven't tested the ink for, its smudge ability. So im not sure if its good for lefties.
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