---
product_id: 721417991
title: "Mitsubishi Pencil Uni-Ball One Gel Ballpoint Pen Refill, 0.38, Black, 10 Pieces, Hako UMR38S.24"
brand: "三菱鉛筆"
price: "316 zł"
currency: PLN
in_stock: true
url: https://www.desertcart.pl/products/721417991-mitsubishi-pencil-uni-ball-one-gel-ballpoint-pen-refill-0
store_origin: PL
region: Poland
---

# Quick-drying, smudge-proof ink Darker, more vibrant black ink 0.38mm ultra-fine tip for precision Mitsubishi Pencil Uni-Ball One Gel Ballpoint Pen Refill, 0.38, Black, 10 Pieces, Hako UMR38S.24

**Brand:** 三菱鉛筆
**Price:** 316 zł
**Availability:** ✅ In Stock

## Summary

> 🖋️ Write sharper, faster, darker — because your ideas deserve to be unforgettable.

## Quick Answers

- **What is this?** Mitsubishi Pencil Uni-Ball One Gel Ballpoint Pen Refill, 0.38, Black, 10 Pieces, Hako UMR38S.24 by 三菱鉛筆
- **How much does it cost?** 316 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/721417991-mitsubishi-pencil-uni-ball-one-gel-ballpoint-pen-refill-0)

## Best For

- 三菱鉛筆 enthusiasts

## Why This Product

- Trusted 三菱鉛筆 brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Memorable Black:** Darker, richer black ink ensures your writing leaves a lasting impression every time.
- • **Ink That Keeps Up:** Quick-drying formula prevents smudges, so your work stays flawless and professional.
- • **Sleek & Lightweight:** Compact 4.4-inch refill with a featherlight 23g weight for smooth, comfortable writing all day.
- • **Seamless Compatibility:** Fits perfectly with Uni-ball One pens (UMN-S-38), making refills effortless and reliable.
- • **Precision that Impresses:** Ultra-fine 0.38mm tip delivers crisp, clean lines for standout notes and signatures.

## Overview

The Mitsubishi Pencil Uni-Ball One Gel Ballpoint Pen Refill features a 0.38mm ultra-fine tip with quick-drying, smudge-proof ink that produces darker, more vibrant black lines. Designed for precision and clarity, this 10-pack refill is compatible with Uni-ball One pens, offering a lightweight and reliable writing experience ideal for professionals who demand crisp, memorable notes.

## Description

Mitsubishi Pencil Uni-Ball One Gel Ballpoint Pen Refill, 0.38, Black, 10 Pieces, Hako UMR38S.24

## Features

- Series: Uni-ball one
- Features: Black is darker and the colors are more vibrant, making it easy to remember and write crisp letters
- Compatible products: UMN-S-38 (uni-ball one 0.01 inch (0.38 mm)
- Lead diameter: 0.01 inches (0.38 mm); Ink color: Black
- Size: Shaft Diameter 0.2 x Thickness 0.2 x Total Length 4.4 inches (6.0 x 6.0 x 112.0 mm); Weight: 1.4 oz (42 g)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | 三菱鉛筆(Mitsubishi Pencil) |
| Brand | 三菱鉛筆 |
| Model Number | ハコUMR38S.24 |
| Product Dimensions | 11.2 x 0.6 x 0.6 cm; 23 g |
| Colour | Black |
| Material Type | Plastic |
| Number of Items | 10 |
| Size | 0.38 |
| Point Type | Extra Fine |
| Ink Colour | Black |
| Manufacturer Part Number | ハコUMR38S.24 |
| Item Weight | 23 g |

## Product Details

- **Brand:** 三菱鉛筆
- **Writing instrument form:** Ballpoint Pen
- **Colour:** Black
- **Ink colour:** Black
- **Age range (description):** All Ages
- **Material:** Plastic
- **Point type:** Extra Fine
- **Model name:** ユニボールone
- **Item dimensions L x W x H:** 11.2 x 0.6 x 0.6 centimetres
- **Included components:** Ink Cartridge

## Images

![Mitsubishi Pencil Uni-Ball One Gel Ballpoint Pen Refill, 0.38, Black, 10 Pieces, Hako UMR38S.24 - Image 1](https://m.media-amazon.com/images/I/71iDaePS-tL.jpg)
![Mitsubishi Pencil Uni-Ball One Gel Ballpoint Pen Refill, 0.38, Black, 10 Pieces, Hako UMR38S.24 - Image 2](https://m.media-amazon.com/images/I/61Clh1OrDtL.jpg)
![Mitsubishi Pencil Uni-Ball One Gel Ballpoint Pen Refill, 0.38, Black, 10 Pieces, Hako UMR38S.24 - Image 3](https://m.media-amazon.com/images/I/61jdQFkEPGL.jpg)
![Mitsubishi Pencil Uni-Ball One Gel Ballpoint Pen Refill, 0.38, Black, 10 Pieces, Hako UMR38S.24 - Image 4](https://m.media-amazon.com/images/I/71nAXBSz1LL.jpg)
![Mitsubishi Pencil Uni-Ball One Gel Ballpoint Pen Refill, 0.38, Black, 10 Pieces, Hako UMR38S.24 - Image 5](https://m.media-amazon.com/images/I/719gKi70ifL.jpg)

## Questions & Answers

**Q: do you also sell ink refills for these pens? I'm looking for blue**
A: These pens do not write well at all.

**Q: How do these compare to Tül pens?**
A: Well TUL has a larger ball base than the UNI. I find a thinner base more functional

**Q: Does the ink show up on black paper or is it just for white paper?**
A: Just for white, I have been looking for a milky equivalent. I keep hoping they will make some :) since these are my favorite.

**Q: Is the ink archival and waterproof?**
A: As far as I can tell yes

## Frequently Bought Together

- Mitsubishi Pencil Uni-Ball One Gel Ballpoint Pen Refill, 0.38, Black, 10 Pieces, Hako UMR38S.24
- Mitsubishi Pencil UMNSP38.52 Gel Ballpoint Pen Uni-Ball One P 0.38 Huka
- Mitsubishi Pencil Uni-Ball One Gel Ballpoint Pen Refill, 0.5, Black, 10 Pieces, Hako UMR05S.24

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**Shop now:** [https://www.desertcart.pl/products/721417991-mitsubishi-pencil-uni-ball-one-gel-ballpoint-pen-refill-0](https://www.desertcart.pl/products/721417991-mitsubishi-pencil-uni-ball-one-gel-ballpoint-pen-refill-0)

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-01-31*