---
product_id: 278339883
title: "AIR Micro - 0.5mm Fine Rollerball - Box of 12- Blue - UBA-188-M"
brand: "uni-ball"
price: "€ 21.35"
currency: EUR
in_stock: true
reviews_count: 6
category: "Uni Ball"
url: https://www.desertcart.ie/products/278339883-air-micro-0-5mm-fine-rollerball-box-of-12-blue
store_origin: IE
region: Ireland
---

# Water & fade resistant Super Ink Pressure-sensitive nib for variable line width 0.5mm fine rollerball tip AIR Micro - 0.5mm Fine Rollerball - Box of 12- Blue - UBA-188-M

**Brand:** uni-ball
**Price:** € 21.35
**Availability:** ✅ In Stock

## Summary

> 🖋️ Write Boldly, Write Securely — Elevate Every Stroke

## Quick Answers

- **What is this?** AIR Micro - 0.5mm Fine Rollerball - Box of 12- Blue - UBA-188-M by uni-ball
- **How much does it cost?** € 21.35 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/278339883-air-micro-0-5mm-fine-rollerball-box-of-12-blue)

## 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

- • **Vibrant Blue That Pops:** Rich, bold blue ink delivers a standout look that elevates your notes and signatures.
- • **Smooth Flow, Every Stroke:** Acetal plastic casing around the metal ball ensures effortless ink flow and silky smooth writing.
- • **Bulk Pack for the Busy Pro:** Box of 12 pens keeps your desk stocked and your workflow uninterrupted.
- • **Precision Meets Personality:** Pressure-sensitive nib adapts line width from 0.28mm to 0.45mm for dynamic, expressive writing.
- • **Ink That Stands the Test of Time:** Uni’s Super Ink resists water, fading, and tampering—perfect for secure, professional documents.

## Overview

The Uni-Ball AIR Micro 0.5mm rollerball pen features a pressure-sensitive nib that varies line width for a fountain pen-like experience. Its unique acetal plastic casing ensures smooth ink flow, while Uni’s Super Ink technology guarantees water, fade, and tamper resistance. This box of 12 vibrant blue pens is designed for professionals who demand precision, style, and security in their writing instruments.

## Description

Write smoothly at any angle with bold ink laydown. AIR's unique cushion-tip technology provides an effortless writing experience. Elegantly designed for elevated style. uni Super Ink technology protects against water, fading & fraud.

Review: Defective Batch - I like the ones I bought from the shop. The ink in most of these dry quickly.
Review: These have been my favorite pens for years! I absolutely love the color of the blue ink it is vibrant and rich and the 0.5mm tip gives the perfect line thickness. They write so smoothly and sometimes the ink almost looks like marker ink instead of regular pen ink which is actually one of the things I love most about them. If you are looking for a pen that stands out and feels great to write with these are it!

## 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.
- Contains 12 Blue Ink Pen

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01M7SDHKV |
| Best Sellers Rank | #61,951 in Office Products ( See Top 100 in Office Products ) #483 in Liquid Ink Rollerball Pens |
| Brand | uni-ball |
| Closure | Click-Off Cap |
| Color | Blue |
| Customer Reviews | 4.6 4.6 out of 5 stars (141) |
| Date First Available | 21 November 2016 |
| Grip Type | Smooth |
| Ink Color | Blue |
| Item Weight | 140 g |
| Line Size | 0.5mm |
| Manufacturer | uni-ball |
| Manufacturer Part Number | UBA-188-M |
| Material Type | Plastic Metal |
| Number of Items | 12 |
| Point Type | Fine |
| Product Dimensions | 7.62 x 2.54 x 15.24 cm; 140 g |
| Size | 1 Count (Pack of 12) |

## Product Details

- **Age range (description):** Adult
- **Brand:** uni-ball
- **Colour:** Blue
- **Ink colour:** Blue
- **Writing instrument form:** Roller Ball Pen

## Images

![AIR Micro - 0.5mm Fine Rollerball - Box of 12- Blue - UBA-188-M - Image 1](https://m.media-amazon.com/images/I/61mSUW7xudL.jpg)

## Customer Reviews

### ⭐ Defective Batch
*by A***A on 16 March 2022*

I like the ones I bought from the shop. The ink in most of these dry quickly.

### ⭐⭐⭐⭐⭐ Review
*by K***P on 7 August 2025*

These have been my favorite pens for years! I absolutely love the color of the blue ink it is vibrant and rich and the 0.5mm tip gives the perfect line thickness. They write so smoothly and sometimes the ink almost looks like marker ink instead of regular pen ink which is actually one of the things I love most about them. If you are looking for a pen that stands out and feels great to write with these are it!

### ⭐⭐⭐⭐⭐ Review
*by T***N on 24 March 2025*

Best pens ever. So smooth and dries so fast!

## Frequently Bought Together

- Uni-Ball AIR Micro - 0.5mm Fine Rollerball - Box of 12- Blue - UBA-188-M
- Uni-Ball AIR Micro - 0.5mm Fine Rollerball - Pack of 12 - Black
- Uni-Ball AIR Micro - 0.5mm Fine Rollerball - Pack of 6 - Red - UBA-188-M

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-03-10*