---
product_id: 121541509
title: "Air Micro Nib Rollerball Pens, 0.5 mm, Black (12-Pack) | Pressure Responsive, Fade Resistant Super Ink, Ergonomic Design, Smooth Flow"
brand: "uni-ball"
price: "AR$90155"
currency: ARS
in_stock: true
reviews_count: 13
category: "Uni Ball"
url: https://www.desertcart.com.ar/products/121541509-air-micro-nib-rollerball-pens-0-5-mm-black-12
store_origin: AR
region: Argentina
---

# Water & fade resistant ink 0.25-0.45mm precision nib Leak-proof capped design Air Micro Nib Rollerball Pens, 0.5 mm, Black (12-Pack) | Pressure Responsive, Fade Resistant Super Ink, Ergonomic Design, Smooth Flow

**Brand:** uni-ball
**Price:** AR$90155
**Availability:** ✅ In Stock

## Summary

> 🖊️ Write sharp, stay bold — never miss a line or a moment.

## Quick Answers

- **What is this?** Air Micro Nib Rollerball Pens, 0.5 mm, Black (12-Pack) | Pressure Responsive, Fade Resistant Super Ink, Ergonomic Design, Smooth Flow by uni-ball
- **How much does it cost?** AR$90155 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/121541509-air-micro-nib-rollerball-pens-0-5-mm-black-12)

## 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 Lasts:** Uni-Ball Super Ink bonds to paper fibers—fade, water, and chemical resistant for archival quality.
- • **Sleek & Secure:** Ergonomic grip with a leak-proof capped top ensures comfort and pocket safety all day long.
- • **Bulk Ready for Pros:** 12-pack of premium black rollerball pens—perfect for office, meetings, or creative journaling.
- • **Effortless Flow Control:** Variable line thickness with pressure-sensitive ink flow for dynamic, expressive writing.
- • **Precision Meets Performance:** Micro 0.25-0.45mm nib for flawless technical writing and crisp small prints.

## Overview

The Uni-Ball Air Micro Nib Rollerball Pen combines the smooth freedom of a fountain pen with the reliability of a rollerball. Featuring a frictionless metal ball and Uni-Ball’s advanced Super Ink, it delivers precise 0.25-0.45mm lines that resist water, fading, and chemicals. Its ergonomic design and leak-proof cap make it the ultimate pen for professionals who demand flawless writing and lasting impressions. Available in a convenient 12-pack of black ink pens.

## Description

The Uniball Micro-Air ballpoint pen gives you the freedom of a fountain pen with the security of a roller-ball with no leaks. Unlike other rollerballs, the Air’s metal ball is held in a plastic surround, allowing the ball to move without friction when the pen is held at an angle. It is filled with Uni-Ball Super Ink, an advanced ink formula that bonds to paper fibers. It is resistant to chemicals that wash dye-based ink from checks. Super ink is also fade resistant, water resistant, and acid free. Applying light pressure will give a finer line as ink is transferred by the ball itself, whilst firmer pressure allows the ink to flow freely around the ball for a thicker line. The Micro-air pen will give you a finer line width between 0.25mm - 0.45mm, perfect for technical writing or small printing. The sleek, elegant look and feel that is comfortable and easy to grip, and the capped top stays put and ensures that this pen will never leak in your pocket. Black Ink in a Box of 12.

Review: Love these pens! - Was finally able to find a pen that was water resistant. They write very smooth, and are perfect for journaling.
Review: Smooth writing utensil - This is the most smooth writing pen ever! It looks similar to calligraphy when used!!

## Features

- Freedom of a fountain pen with the security of a roller-ball with no leaks, the Air’s unique metal ball can move without friction when the pen is held at an angle
- Filled with Uni-Ball Super Ink, an advanced ink formula that bonds to paper fibers, fade resistant, water resistant, and acid free, resistant to chemicals that wash dye-based ink from checks
- Light pressure will give a finer line as ink is transferred by the ball itself, firmer pressure allows the ink to flow freely around the ball for a thicker line
- Will give you a finer line width between 0.25mm - 0.45mm, perfect for technical writing or small printing, Black Ink in a Box of 12
- Sleek, elegant look and feel that is comfortable and easy to grip, capped top stays put and ensures that this pen will never leak in your pocket

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B016BHQ0UO |
| Additional Features | Lightweight, Liquid Ink, Pocket Clip, Quick Drying |
| Age Range (Description) | Adult |
| Age Range Description | Adult |
| Best Sellers Rank | #75,509 in Office Products ( See Top 100 in Office Products ) #182 in Liquid Ink Rollerball Pens |
| Body Shape | Round |
| Brand | Uni-Ball |
| Brand Name | Uni-Ball |
| Closure Type | Click-Off Cap |
| Color | Black Gel |
| Customer Reviews | 4.6 out of 5 stars 1,029 Reviews |
| Drill Point | Fine |
| Global Trade Identification Number | 04548351063887 |
| Grip Type | Ergonomic handle |
| Hand Orientation | Ambidextrous |
| Hardness | F |
| Included Components | Pens Only |
| Ink Base | Water |
| Ink Color | Black |
| Item Dimensions | 1.1 x 3.19 x 5.75 inches |
| Item Type Name | Fountain Pen Tip Air Rollerball Pens |
| Item Weight | 0.1 kg |
| Line Size | 0.5 millimeters |
| Manufacturer | Mitsubishi Pencil Company |
| Material | Metal Plastic |
| Material Type | Metal Plastic |
| Model Name | UBA-188-M |
| Model Number | 190470000 |
| Recommended Uses For Product | Writing |
| Style | 12 Black |
| Unit Count | 12 Count |
| Water Resistance Level | Waterproof |
| Writing Instrument Form | Roller Ball Pen |
| Writing Technique | rollerball |

## Product Details

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

## Images

![Air Micro Nib Rollerball Pens, 0.5 mm, Black (12-Pack) | Pressure Responsive, Fade Resistant Super Ink, Ergonomic Design, Smooth Flow - Image 1](https://m.media-amazon.com/images/I/71X1oelZtCL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Love these pens!
*by K***L on August 29, 2024*

Was finally able to find a pen that was water resistant. They write very smooth, and are perfect for journaling.

### ⭐⭐⭐⭐⭐ Smooth writing utensil
*by J***N on February 21, 2023*

This is the most smooth writing pen ever! It looks similar to calligraphy when used!!

### ⭐⭐⭐⭐⭐ Makes fountain pens more everyday
*by N***S on November 20, 2024*

Changing reading to 5 starts. While the ink doesn't dry quickly, the pen is easy to use. These are far less messy that a "real" fountain pen. I like them and will buy again.

## Frequently Bought Together

- uni-ball UB-188-M Micro Air Rollerball Pens. Premium 0.5mm Nib for Super Smooth Handwriting. Writes Like a Fountain Pen. Fade and Water Resistant Liquid Uni Super Ink. Box of 12 Black Ballpoint Pens
- Pukka Pad, A4 Metallic Jotta Book 3 Pack – 21 x 30cm – Wirebound Notebook with 8mm Lines and 80GSM Paper – Features 4-Hole Punch Margins and Perforated Edges - 200 Pages, Green
- uni-ball UB-157 Eye Rollerball Pens. Premium Fine 0.7mm Ballpoint Tip for Super Smooth Handwriting, Drawing, Art, Crafts and Colouring. Fade and Water Resistant Liquid Uni Super Ink. Box of 12 Black

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**Shop now:** [https://www.desertcart.com.ar/products/121541509-air-micro-nib-rollerball-pens-0-5-mm-black-12](https://www.desertcart.com.ar/products/121541509-air-micro-nib-rollerball-pens-0-5-mm-black-12)

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-08-19*