---
product_id: 48279350
title: "Uni-ball Signo Dx Um-151 Gel Ink Pen - 0.38 Mm - 10 Pcs - Black - Uni Mitsubishi Pencil"
brand: "uni-ball"
price: "$38.65"
currency: USD
in_stock: true
reviews_count: 13
category: "Uni Ball"
url: https://www.desertcart.us/products/48279350-uni-ball-signo-dx-um-151-gel-ink-pen-0
store_origin: US
region: United States of America
---

# durable, heavy-duty tip withstands pressure smooth black hybrid gel ink flow 0.38mm ultra-fine tip for precision Uni-ball Signo Dx Um-151 Gel Ink Pen - 0.38 Mm - 10 Pcs - Black - Uni Mitsubishi Pencil

**Brand:** uni-ball
**Price:** $38.65
**Availability:** ✅ In Stock

## Summary

> 🖋️ Write sharp, write bold — the pen that means business.

## Quick Answers

- **What is this?** Uni-ball Signo Dx Um-151 Gel Ink Pen - 0.38 Mm - 10 Pcs - Black - Uni Mitsubishi Pencil by uni-ball
- **How much does it cost?** $38.65 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/48279350-uni-ball-signo-dx-um-151-gel-ink-pen-0)

## Best For

- uni-ball enthusiasts

## Why This Product

- Trusted uni-ball brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Sturdy barrel and tip engineered for heavy-handed pros who demand durability.
- • **Ink that Glides:** Hybrid gel ink delivers consistent, skip-free writing every time.
- • **Exclusive & Coveted:** Hard to find in the US—own the pen that’s a secret weapon for professionals.
- • **Artist & Writer Favorite:** Join the cult following of creatives who swear by the Uni Signo DX over competitors.
- • **Precision that Impresses:** Experience razor-sharp 0.38mm lines that elevate your notes and sketches.

## Overview

The Uni-ball Signo DX UM-151 is a premium Japanese gel ink pen featuring an ultra-fine 0.38mm tip, hybrid black ink for smooth, consistent flow, and a robust design that withstands heavy use. Popular among artists and professionals, this pack of 10 pens offers precision and durability that outperforms many competitors, making it a must-have for those who demand excellence in every stroke.

## Description

From the manufacturer

Review: Excellent pen. - Beautifully sharp. This is the closest I've come to a fine nib fountain pen. Flows easily with no scraping or missed strokes. Bought a box of 10. I'll be reordering again.
Review: the greatest pens ever (bias) - the best pens i’ve ever bought and i always repurchase it may not be the cheapest but the durability and ink flow + duration are exactly what i wanted

## Features

- Uni-Ball Signo DX 0.38 by 151 Gel Ink Pen, Pack of 10 (Black)
- Users can enjoy clean and even flowing lines, and the strong tips can withstand all the heavy handed writing you can offer.
- The Uni Signo DX is highly sought after by artists and writers alike, but difficult to find in the US.
- The Uni Signo DX (UM-151) is claimed by some to be even better than the Pilot Hi-Tec-C! It comes in 0.38mm tip size.
- The barrel and tip are a bit sturdier than the Hi-Tec-C, which might explain why converts love them. Users can enjoy clean and even flowing lines, and the strong tips can withstand all the heavy handed writing you can offer.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003FXWGWE |
| Age Range Description | Adult |
| Age range (description) | Adult |
| Best Sellers Rank | 21,285 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 309 in Gel Ink Rollerball Pens |
| Body Shape | Rectangular |
| Brand | uni-ball |
| Brand Name | uni-ball |
| Closure Type | Click-Off Cap |
| Colour | Black |
| Country Of Origin | Japan |
| Customer Reviews | 4.7 out of 5 stars 1,554 Reviews |
| Drill Point | Fine |
| Grip Type | Contoured |
| Included Components | Pack of 10 |
| Ink Base | Hybrid |
| Ink Colour | Black |
| Ink colour | Black |
| Is the Product Left or Right Handed? | Ambidextrous |
| Item Dimensions | 12.7 x 5.1 x 10.2 centimetres |
| Item Weight | 0.2 Pounds |
| Line Size | 0.3mm |
| Manufacturer | Uni-Ball |
| Material | Plastic |
| Material Type | Plastic |
| Model Name | Signo DX UM-151 |
| Model Number | UM151.24 |
| Recommended Uses For Product | Drawing |
| Special Features | Liquid Ink |
| Style | Modern |
| Theme | Artistic Writing |
| UPC | 700600929625 |
| Unit Count | 10.0 count |
| Water Resistance Level | Not Water Resistant |
| Writing Instrument Form | Technical Pen |
| Writing Technique | Gel Ink |
| Writing instrument form | Technical Pen |

## Product Details

- **Age range (description):** Adult
- **Brand:** uni-ball
- **Colour:** Black
- **Ink colour:** Black
- **Material:** Plastic
- **Model name:** Signo DX UM-151
- **Point type:** Fine
- **Special feature:** Liquid Ink
- **Unit count:** 10.0 count
- **Writing instrument form:** Technical Pen

## Images

![Uni-ball Signo Dx Um-151 Gel Ink Pen - 0.38 Mm - 10 Pcs - Black - Uni Mitsubishi Pencil - Image 1](https://m.media-amazon.com/images/I/61gJkqd+8aL.jpg)
![Uni-ball Signo Dx Um-151 Gel Ink Pen - 0.38 Mm - 10 Pcs - Black - Uni Mitsubishi Pencil - Image 2](https://m.media-amazon.com/images/I/51WqC5ieFaL.jpg)
![Uni-ball Signo Dx Um-151 Gel Ink Pen - 0.38 Mm - 10 Pcs - Black - Uni Mitsubishi Pencil - Image 3](https://m.media-amazon.com/images/I/41GNdnm2WlL.jpg)
![Uni-ball Signo Dx Um-151 Gel Ink Pen - 0.38 Mm - 10 Pcs - Black - Uni Mitsubishi Pencil - Image 4](https://m.media-amazon.com/images/I/41OEf7YA63L.jpg)

## Questions & Answers

**Q: Is it a good pen for lefties? Does it dry quickly?**
A: Hai! Watashiwa hidari-kiki desu! :) Yes, I'm left-handed), and I find the Mitsubishi UM-151 one of the most pleasant pens to write with.

**Q: Could you tell me if the pens contain waterproof ink.**
A: No, it's not waterproof ink.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent pen.
*by G***Y on 30 April 2026*

Beautifully sharp. This is the closest I've come to a fine nib fountain pen. Flows easily with no scraping or missed strokes. Bought a box of 10. I'll be reordering again.

### ⭐⭐⭐⭐⭐ the greatest pens ever (bias)
*by P***T on 18 May 2026*

the best pens i’ve ever bought and i always repurchase it may not be the cheapest but the durability and ink flow + duration are exactly what i wanted

### ⭐⭐⭐⭐⭐ Long lasting, very fine lines, comfortable to hold.
*by M***N on 19 September 2020*

I wanted a nice fine pen for writing small and drawing fine details in diagrams and found these suggested a couple of years ago. I've now gone through 20 of these pens and have loved 19 of them. (1 was a little scratchy, the rest were as smooth as I could wish for) You might think 20 pens in two years means they don't last long, but that's not true. I write a lot. I know from having typed up my notes that I have written at least 200 thousand words in that time. And that's not including the pens people have borrowed from me and not given back because they fell in love with them too. It's difficult to get the 0.38mm in the UK, so I tried the 0.7mm too. It is wonderful and fluid, but the breadth of the stroke is such that it's for a larger writing style.

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-26*