---
product_id: 19826654
title: "Signo UM-100 Gel Ink Pen - 0.5 mm -10 Pcs (Black)"
brand: "uni-ball"
price: "₩35753"
currency: KRW
in_stock: true
reviews_count: 13
category: "Uni Ball"
url: https://www.desertcart.kr/products/19826654-signo-um-100-gel-ink-pen-0-5-mm-10
store_origin: KR
region: South Korea
---

# Pack of 10 pens for long-lasting use Smooth black gel ink, quick-dry 0.5 mm fine tip for precision Signo UM-100 Gel Ink Pen - 0.5 mm -10 Pcs (Black)

**Brand:** uni-ball
**Price:** ₩35753
**Availability:** ✅ In Stock

## Summary

> 🖊️ Write sharp, write smart — never miss a stroke!

## Quick Answers

- **What is this?** Signo UM-100 Gel Ink Pen - 0.5 mm -10 Pcs (Black) by uni-ball
- **How much does it cost?** ₩35753 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/19826654-signo-um-100-gel-ink-pen-0-5-mm-10)

## 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

- • **Effortless Smooth Flow:** Uni-ball’s gel ink glides seamlessly, drying quickly to keep your work smudge-free.
- • **Ergonomic Comfort Grip:** Contoured design reduces hand fatigue during long writing sessions.
- • **Endurance in Every Pack:** 10 pens per pack ensure you’re always ready to jot down your next big idea.
- • **Trusted by Professionals:** A decade-long favorite with a 4.6-star rating, proving reliability and quality.
- • **Precision at Your Fingertips:** 0.5 mm fine tip delivers crisp, clean lines for professional notes and signatures.

## Overview

The Uni-ball Signo UM-100 Gel Ink Pen features a precise 0.5 mm fine tip with smooth, quick-drying black gel ink. Sold in a convenient 10-pack, it offers ergonomic comfort and trusted durability, making it a top choice for professionals and creatives alike.

## Description

desertcart.com: Uni-ball Signo UM-100 Gel Ink Pen - 0.5 mm -10 Pcs (Black) : Office Products

Review: Very good pen - I have been using it for many years, it is a very good pen
Review: Best pen! - I’ve been using the Uniball UM-100 since college - over 10 years now - and it’s still my favorite pen! The ink flows smoothly and dries quickly.

## Features

- You will receive 10 pens

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B005642TAY |
| Best Sellers Rank | #77,948 in Office Products ( See Top 100 in Office Products ) #1,595 in Gel Ink Pens |
| Brand | Uni-Ball |
| Color | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (143) |
| Date First Available | June 15, 2011 |
| Grip Type | Contoured |
| Ink Color | Black |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.01 ounces |
| Item model number | E287545H |
| Line Size | 0.5 Millimeters |
| Manufacturer | uni Uni-ball |
| Manufacturer Part Number | E287545H |
| Material Type | Polypropylene |
| Number of Items | 10 |
| Point Type | Fine |
| Product Dimensions | 0.35 x 5.94 x 5.94 inches |
| Size | 1 Count (Pack of 10) |

## Product Details

- **Age Range (Description):** Kid
- **Brand:** Uni-Ball
- **Color:** Black
- **Ink Color:** Black
- **Writing Instrument Form:** Roller Ball Pen

## Images

![Signo UM-100 Gel Ink Pen - 0.5 mm -10 Pcs (Black) - Image 1](https://m.media-amazon.com/images/I/31Boz1Nhx3L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very good pen
*by A***R on October 11, 2025*

I have been using it for many years, it is a very good pen

### ⭐⭐⭐⭐⭐ Best pen!
*by C***E on June 4, 2025*

I’ve been using the Uniball UM-100 since college - over 10 years now - and it’s still my favorite pen! The ink flows smoothly and dries quickly.

### ⭐⭐⭐⭐⭐ New favorite pen!
*by M***7 on November 19, 2024*

Comfortable in hand and black ink is fairly bold. Ink flows smoothly. Generally ink won’t smear ( I am not left handed) and appears to dry almost instantly. Ink lasts a long time and cost per pen is very reasonable when bought in packs of 10. Comes in different point sizes but I prefer the micro point 0.5. Other sizes available (0.38 really micro, 0.7 fine, and 1.0 bold).

## Frequently Bought Together

- Uni-ball Signo UM-100 Gel Ink Pen - 0.5 mm -10 Pcs (Black)
- Uni-ball Signo Standard Gel Ink Ballpoint Pen UM-100 (UM100.64), Blue Black, 0.5mm, 6 pens per Pack (Japan Import) [Komainu-Dou Original Package]
- Uni-ball Signo UM-100 Gel Ink Pen - 0.5 mm -10 Pcs (Blue)

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**Shop now:** [https://www.desertcart.kr/products/19826654-signo-um-100-gel-ink-pen-0-5-mm-10](https://www.desertcart.kr/products/19826654-signo-um-100-gel-ink-pen-0-5-mm-10)

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-02-07*