---
product_id: 19826654
title: "Uni-ball Signo UM-100 Gel Ink Pen - 0.5 mm -10 Pcs (Black)"
brand: "uni-ball"
price: "VT4081"
currency: VUV
in_stock: true
reviews_count: 13
category: "Uni Ball"
url: https://www.desertcart.vu/products/19826654-uni-ball-signo-um-100-gel-ink-pen-0-5
store_origin: VU
region: Vanuatu
---

# Refillable design Smooth, saturated ink flow 0.5 mm precision tip Uni-ball Signo UM-100 Gel Ink Pen - 0.5 mm -10 Pcs (Black)

**Brand:** uni-ball
**Price:** VT4081
**Availability:** ✅ In Stock

## Summary

> 🖋️ Write your success story with every stroke!

## Quick Answers

- **What is this?** Uni-ball Signo UM-100 Gel Ink Pen - 0.5 mm -10 Pcs (Black) by uni-ball
- **How much does it cost?** VT4081 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/19826654-uni-ball-signo-um-100-gel-ink-pen-0-5)

## 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

- • **Value in a Pack:** 10 pens per pack to keep your desk—and your ideas—fully stocked
- • **Endless Creativity:** Refillable ink system keeps you writing without interruption
- • **Comfort Meets Control:** Contoured grip designed for ambidextrous use and all-day comfort
- • **Effortless Smoothness:** Gel ink glides smoothly without slipping or leaking
- • **Precision that Impresses:** 0.5 mm fine tip for crisp, professional writing every time

## Overview

The Uni-ball Signo UM-100 Gel Ink Pen features a precise 0.5 mm tip and smooth, water-based gel ink that delivers consistent, vibrant black lines without leakage. Its refillable design and contoured grip make it a sustainable and comfortable choice for professionals and creatives alike. Sold in a convenient 10-pack, it’s the reliable pen that keeps up with your fast-paced, detail-driven lifestyle.

## Description

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

Review: My favourite pen - Saturated beautiful writting from the begining to the end of each pen with out leakage. Moving is very smooth but not slippy, it is hard to find a better option than this one.
Review: Very good pen - I have been using it for many years, it is a very good pen

## Features

- You will receive 10 pens

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B005642TAY |
| Additional Features | Refillable |
| Age Range Description | Kid |
| Best Sellers Rank | #77,885 in Office Products ( See Top 100 in Office Products ) #1,560 in Gel Ink Pens |
| Body Shape | Round |
| Brand Name | Uni-Ball |
| Color | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (147) |
| Drill Point | Fine |
| Grip Type | Contoured |
| Hand Orientation | Ambidextrous |
| Included Components | 10 Uni-ball Signo UM-100 Gel Ink Pens |
| Ink Base | Water |
| Ink Color | Black |
| Item Dimensions | 0.35 x 5.94 x 5.94 inches |
| Item Weight | 0.01 Ounces |
| Line Size | 0.5 Millimeters |
| Manufacturer | uni Uni-ball |
| Material Type | Polypropylene |
| Model Number | E287545H |
| Style | Refillable |
| Unit Count | 10.0 Count |
| Writing Instrument Form | Roller Ball Pen |

## Product Details

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

## Images

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

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ My favourite pen
*by J***G on January 9, 2026*

Saturated beautiful writting from the begining to the end of each pen with out leakage. Moving is very smooth but not slippy, it is hard to find a better option than this one.

### ⭐⭐⭐⭐⭐ 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.

## 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.vu/products/19826654-uni-ball-signo-um-100-gel-ink-pen-0-5](https://www.desertcart.vu/products/19826654-uni-ball-signo-um-100-gel-ink-pen-0-5)

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-05-05*