---
product_id: 457250731
title: "uni-ball AIR Micro - 0.5mm Fine Rollerball - 4 Pack - Black and Blue Ink - UBA-188-M"
brand: "uni-ball"
price: "AR$42913"
currency: ARS
in_stock: true
reviews_count: 2
category: "Uni Ball"
url: https://www.desertcart.com.ar/products/457250731-uni-ball-air-micro-0-5mm-fine-rollerball-4-pack
store_origin: AR
region: Argentina
---

# Water & light resistant Super Ink 0.5mm pressure-sensitive nib Tamper-resistant ink security uni-ball AIR Micro - 0.5mm Fine Rollerball - 4 Pack - Black and Blue Ink - UBA-188-M

**Brand:** uni-ball
**Price:** AR$42913
**Availability:** ✅ In Stock

## Summary

> 🖋️ Write Boldly, Securely, and Smoothly — Because Your Ideas Deserve the Best

## Quick Answers

- **What is this?** uni-ball AIR Micro - 0.5mm Fine Rollerball - 4 Pack - Black and Blue Ink - UBA-188-M by uni-ball
- **How much does it cost?** AR$42913 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/457250731-uni-ball-air-micro-0-5mm-fine-rollerball-4-pack)

## 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

- • **Ink That Stands the Test:** Super Ink resists water, light, and fraudulent tampering for lasting documents.
- • **Dual-Tone Professional Set:** Four pens included—two black and two blue—to match every business need.
- • **Smooth Ink Flow Technology:** Acetal plastic-encased metal ball ensures ultra-smooth, consistent writing.
- • **Ambidextrous Comfort & Style:** Ergonomic stick design fits naturally in any hand for effortless writing.
- • **Fountain Pen Feel, Rollerball Ease:** Experience dynamic line variation from 0.28mm to 0.45mm with every stroke.

## Overview

The uni-ball AIR Micro 4-pack features 0.5mm pressure-sensitive rollerball pens with a unique acetal plastic-encased metal nib for smooth ink flow and dynamic line width. Equipped with Uni’s Super Ink, these pens offer water, light, and tamper resistance, ensuring your writing stays sharp and secure. Perfect for professionals seeking a fountain pen feel without the fuss, this set includes two black and two blue pens designed for ambidextrous use and long-lasting performance.

## Description

The metal ball of the nib is encased in an acetal plastic, rather than the standard metal surround, which allows for a smoother flow of ink around the ball, and an increased flow as further pressure is applied. This set contains four gel ink rollerball pens, two with black and two with blue ink.

Review: Perfect Fountain Pen Imitator - I had to write with a fountain pen for a specific piece, and love my micro ball pen but it didn’t have the right flow to match a fountain pen. When I did purchase one, it just didn’t quite feel right, and so I found these. The pen is very similar to other uniball offerings in shape, and hold. Glides across the paper even more than my microball which took some adjust along with the slower drying ink, but the overall quality was sublime. Compared to a fountain pen you can’t tell the difference unless someone was watching you write with it, and considering it is a fraction of the cost and doesn’t have the problems to go with it, it’s a no-brainer.
Review: Don't come in the uniball paper packaging - I was skeptical as they didn't arrive in the uniball paper packaging. But once they were opened and used, they were fantastic.

## Features

- The revolutionary nib of the Air, unlike conventional rollerballs, is pressure sensitive, meaning that it gives a writing experience and differentiating line width similar to that of a fountain pen.
- The metal ball of the nib is encased in an acetal plastic, rather than the standard metal surround, which allows for a smoother flow of ink around the ball, and an increased flow as further pressure is applied.
- The 0.5mm ball delivers a line width of between 0.28mm and 0.45mm (dependent on pressure).
- Features Uni's high quality "Super Ink", which is not only water and light resistant, but also "Tamper-Resistant", meaning that the ink cannot be washed off using chemicals and solutions used by people to fraudulently modify documents.
- This set contains four pens, two with black and two with blue ink.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B59W6ZPB |
| Age Range Description | Adult |
| Best Sellers Rank | 25,096 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 104 in Liquid Ink Rollerball Pens |
| Body Shape | Stick |
| Brand Name | uni-ball |
| Closure Type | Click-Off Cap |
| Colour | Multicolor |
| Country Of Origin | Japan |
| Customer Reviews | 4.6 4.6 out of 5 stars (17) |
| Drill Point | Fine |
| Included Components | Four pens |
| Ink Base | Water |
| Ink Colour | Assorted |
| Is the Product Left or Right Handed? | Ambidextrous |
| Item Dimensions | 14 x 5.2 x 1.6 centimetres |
| Item Weight | 0.04 Kilograms |
| Line Size | 0_5mm |
| Manufacturer | Mitsubishi Pencil Co Ltd |
| Material Type | Plastic |
| Model Name | Uni-Ball AIR Micro |
| Recommended Uses For Product | Writing |
| Special Features | Pressure Sensitive |
| Style | Stick |
| Unit Count | 4.0 Count |
| Water Resistance Level | Water Resistant |
| Writing Instrument Form | Roller Ball Pen |

## Product Details

- **Age range (description):** Adult
- **Brand:** uni-ball
- **Colour:** Multicolor
- **Ink colour:** Assorted
- **Material:** Plastic
- **Model name:** Uni-Ball AIR Micro
- **Point type:** Fine
- **Special feature:** Pressure Sensitive
- **Unit count:** 4.0 Count
- **Writing instrument form:** Roller Ball Pen

## Images

![uni-ball AIR Micro - 0.5mm Fine Rollerball - 4 Pack - Black and Blue Ink - UBA-188-M - Image 1](https://m.media-amazon.com/images/I/711ptX0E5rL.jpg)
![uni-ball AIR Micro - 0.5mm Fine Rollerball - 4 Pack - Black and Blue Ink - UBA-188-M - Image 2](https://m.media-amazon.com/images/I/61ITnJTiFsL.jpg)
![uni-ball AIR Micro - 0.5mm Fine Rollerball - 4 Pack - Black and Blue Ink - UBA-188-M - Image 3](https://m.media-amazon.com/images/I/61hBDkoObPL.jpg)
![uni-ball AIR Micro - 0.5mm Fine Rollerball - 4 Pack - Black and Blue Ink - UBA-188-M - Image 4](https://m.media-amazon.com/images/I/61ixfyRI8+L.jpg)
![uni-ball AIR Micro - 0.5mm Fine Rollerball - 4 Pack - Black and Blue Ink - UBA-188-M - Image 5](https://m.media-amazon.com/images/I/61wNMXjqs2L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect Fountain Pen Imitator
*by J***E on 21 December 2024*

I had to write with a fountain pen for a specific piece, and love my micro ball pen but it didn’t have the right flow to match a fountain pen. When I did purchase one, it just didn’t quite feel right, and so I found these. The pen is very similar to other uniball offerings in shape, and hold. Glides across the paper even more than my microball which took some adjust along with the slower drying ink, but the overall quality was sublime. Compared to a fountain pen you can’t tell the difference unless someone was watching you write with it, and considering it is a fraction of the cost and doesn’t have the problems to go with it, it’s a no-brainer.

### ⭐⭐⭐⭐ Don't come in the uniball paper packaging
*by Z***A on 17 December 2025*

I was skeptical as they didn't arrive in the uniball paper packaging. But once they were opened and used, they were fantastic.

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**Shop now:** [https://www.desertcart.com.ar/products/457250731-uni-ball-air-micro-0-5mm-fine-rollerball-4-pack](https://www.desertcart.com.ar/products/457250731-uni-ball-air-micro-0-5mm-fine-rollerball-4-pack)

---

*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-04-24*