---
product_id: 54427791
title: "Air, Micro Nib, Black Liquid Ink Rollerball Pens (12pc Set) - Smooth, Comfortable, Long Lasting, Japanese Quality, for School, Work, Office, Study, Teacher, Notes, Journal, Gift"
brand: "uni-ball"
price: "¥7360"
currency: JPY
in_stock: true
reviews_count: 13
category: "Uni Ball"
url: https://www.desertcart.jp/products/54427791-air-micro-nib-black-liquid-ink-rollerball-pens-12pc-set
store_origin: JP
region: Japan
---

# Super Ink: fade, water & chemical resistant Frictionless metal ball for smooth flow 0.25-0.45mm micro nib precision Air, Micro Nib, Black Liquid Ink Rollerball Pens (12pc Set) - Smooth, Comfortable, Long Lasting, Japanese Quality, for School, Work, Office, Study, Teacher, Notes, Journal, Gift

**Brand:** uni-ball
**Price:** ¥7360
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** Air, Micro Nib, Black Liquid Ink Rollerball Pens (12pc Set) - Smooth, Comfortable, Long Lasting, Japanese Quality, for School, Work, Office, Study, Teacher, Notes, Journal, Gift by uni-ball
- **How much does it cost?** ¥7360 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/54427791-air-micro-nib-black-liquid-ink-rollerball-pens-12pc-set)

## 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, ensuring your work stays vibrant and smudge-proof.
- • **Sleek Comfort Grip:** Ergonomically designed with a knurled grip for all-day writing without fatigue.
- • **Effortless Smoothness:** Unique metal ball design glides friction-free even at angled writing positions.
- • **Leak-Proof Confidence:** Secure capped top prevents leaks, making it ideal for on-the-go professionals.
- • **Precision Meets Performance:** Micro nib delivers ultra-fine lines perfect for technical writing and detailed notes.

## Overview

The uni-ball Air Micro Nib Rollerball Pen set features precision 0.25-0.45mm tips with advanced Uni-Ball Super Ink that resists fading, water, and chemicals. Its frictionless metal ball ensures smooth, consistent ink flow even at angles, while the ergonomic knurled grip and leak-proof cap make it perfect for professional, academic, and creative use. Packaged in a convenient 12-piece set, it’s the ultimate tool for those who demand reliability and style in every stroke.

## Description

Great prices on your favourite Office brands plus free delivery and returns on eligible orders.

Review: Good for junk journals etc - Intense colour and good flow on lots of different textured surfaces. Recommended to me by a fellow crafter and I'm very happy with them.
Review: Uniball micro air blue ball pens - Great for daily use and calligraphy

## 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 |
| Best Sellers Rank | 9,528 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 179 in Gel Ink Rollerball Pens |
| Brand | uni-ball |
| Closure | Click-Off Cap |
| Colour | black |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,299) |
| Date First Available | 2 Jan. 2016 |
| Grip Type | Knurled |
| Ink Colour | Black |
| Item Weight | 100 g |
| Line Size | 0_25mm_und_0_45mm |
| Manufacturer | Mitsubishi Pencil Company |
| Manufacturer Part Number | UBA-188-M |
| Material Type | Metal, Plastic, Stainless Steel, Tungsten Carbide |
| Model Number | 190470000 |
| Number of Items | 12 |
| Pencil Lead Degree (Hardness) | F |
| Point Type | Micro 0.5mm |
| Product Dimensions | 2.8 x 8.1 x 14.6 cm; 100 g |
| Size | 1 count (Pack of 12) |

## Product Details

- **Age range (description):** All Ages
- **Brand:** uni-ball
- **Colour:** black
- **Ink colour:** Black
- **Material:** Metal, Plastic, Stainless Steel, Tungsten Carbide
- **Model name:** UB-188-M Air Micro
- **Point type:** Micro 0.5mm
- **Special feature:** Fade Proof, Liquid Ink, Pocket Clip, Tamper Proof, Waterproof
- **Unit count:** 12.0 count
- **Writing instrument form:** Roller Ball Pen

## Images

![Air, Micro Nib, Black Liquid Ink Rollerball Pens (12pc Set) - Smooth, Comfortable, Long Lasting, Japanese Quality, for School, Work, Office, Study, Teacher, Notes, Journal, Gift - Image 1](https://m.media-amazon.com/images/I/71X1oelZtCL.jpg)

## Available Options

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

## Questions & Answers

**Q: are these pens fine or medium tip?**
A: I would say they are fine. The uni-ball air (without the micro part) are thicker if you need a thicker tip otherwise I would say these are similar to biro tips in terms of size.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good for junk journals etc
*by J***S on 26 December 2025*

Intense colour and good flow on lots of different textured surfaces. Recommended to me by a fellow crafter and I'm very happy with them.

### ⭐⭐⭐⭐⭐ Uniball micro air blue ball pens
*by A***U on 27 July 2025*

Great for daily use and calligraphy

### ⭐⭐⭐⭐⭐ Smooth to write with
*by M***V on 22 May 2025*

Really nice pens, they write very well

## 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

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.jp/products/54427791-air-micro-nib-black-liquid-ink-rollerball-pens-12pc-set](https://www.desertcart.jp/products/54427791-air-micro-nib-black-liquid-ink-rollerball-pens-12pc-set)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-15*