---
product_id: 262741288
title: "MUJI Moma Aluminum Fountain Pen"
brand: "muji"
price: "442 kr"
currency: DKK
in_stock: true
reviews_count: 6
category: "Muji"
url: https://www.desertcart.dk/products/262741288-muji-moma-aluminum-fountain-pen
store_origin: DK
region: Denmark
---

# 13.7 cm sleek length 20g ultra-lightweight Precision-made in Japan MUJI Moma Aluminum Fountain Pen

**Brand:** muji
**Price:** 442 kr
**Availability:** ✅ In Stock

## Summary

> 🖋️ Write Your Success Story with MUJI’s Sleek Aluminum Fountain Pen

## Quick Answers

- **What is this?** MUJI Moma Aluminum Fountain Pen by muji
- **How much does it cost?** 442 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/262741288-muji-moma-aluminum-fountain-pen)

## Best For

- muji enthusiasts

## Why This Product

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

## Key Features

- • **Crafted in Japan:** Benefit from impeccable quality control and craftsmanship that ensures consistent smoothness and durability.
- • **Compact & Stylish:** Slim 1cm diameter and 13.7cm length make it your sleek desk companion and a statement of refined taste.
- • **Effortless Elegance:** Experience smooth, luxurious writing with a finely tuned nib that rivals pens costing 10x more.
- • **Featherlight Design:** At just 20 grams, enjoy all-day comfort without hand fatigue—perfect for marathon meetings or creative sessions.
- • **Versatile Ink Compatibility:** Works seamlessly with Muji 5-139040 cartridges and standard international refills for hassle-free use.

## Overview

The MUJI Moma Aluminum Fountain Pen is a lightweight, precision-crafted writing instrument made in Japan. Measuring 13.7 cm in length and weighing only 20 grams, it offers a smooth nib experience comparable to luxury pens at a fraction of the price. Compatible with Muji and international ink cartridges, this pen combines minimalist design with professional-grade performance, making it a must-have for discerning millennials who value style and substance.

## Description

MUJI Moma Aluminum Fountain Pen,MUJI Moma Aluminum Fountain Pen

Review: Beautiful - What a Fantastic Fountain pen Smooth and Elegant Works with art and writing Such an investment
Review: I own many fountain pens (possibly too many) and this is one of my favourites. It's compact, comfortable, very light, and stylish. It also has one of the smoothest nibs I own which makes it a pleasure to write and sketch with. In fact it has a smoother nib than other pens in my collection that cost ten times as much making it fantastic value. I've no idea if I was lucky to get such a smooth nib with my first Muji fountain pen but I've read other positive accounts so perhaps it's a sign of great quality control. The only minor negative point I can think of is that it comes with only a small international cartridge but this means it can be used with a large international cartridge or convertor so it's easily remedied. Some people classify this as a starter pen and while I think it's true that its low cost and ease of use put it in the same league as the Lamy Safari and Pilot Metropolitan and it's not as fancy as high-priced pens it's definitely a pleasure to use at any time. Highly recommended.

## Features

- Weight: 20g
- Compatible ink cartridges: Muji 5-139040 (５－１３９０４０)
- Made in Japan
- Dimensions: total length 13.7 cm (with cap), diameter 1cm

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00MDRZLHA |
| Best Sellers Rank | #4,301 in Office Products ( See Top 100 in Office Products ) #26 in Fountain Pens |
| Brand | MUJI |
| Closure | Click-Off Cap |
| Color | Black |
| Customer Reviews | 4.3 4.3 out of 5 stars (2,490) |
| Date First Available | 14 September 2014 |
| Grip Type | Smooth |
| Ink Color | Black |
| Item Weight | 20 g |
| Line Size | 0.3mm |
| Manufacturer | Other |
| Manufacturer Part Number | 15136865 |
| Material Type | Metal Aluminium |
| Model number | 15136865 |
| Number of Items | 1 |
| Pencil Lead Degree (Hardness) | Fine |
| Point Type | Nib |
| Product Dimensions | 13.7 x 1 x 1 cm; 20 g |
| Size | 2 Piece Set |

## Product Details

- **Age range (description):** Adult
- **Brand:** MUJI
- **Colour:** Black
- **Ink colour:** Black
- **Writing instrument form:** Fountain Pen

## Images

![MUJI Moma Aluminum Fountain Pen - Image 1](https://m.media-amazon.com/images/I/41qDjK6Iw3L.jpg)

## Available Options

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

## Questions & Answers

**Q: What converter would be compatable with this pen?**
A: in this pen, it requires a standard international converter, but since the shape of the intake is slanted like a standard international cartridge, many of the chinese standard int'l converters won't work (since they're like cylinders with standard int'l bore, and not tapered). you're gonna wanna look for a standard international converter that has the smaller, slanted part at the front instead of just being a barrel.

brands that do fit: schmidt (the K5), monteverde, montblanc, waterman, rotring, and some select moonman ones.

brands that do NOT work (unless you're willing to file off some from the front to make it fit): jinhao, hero, penbbs, most chinese brands.  

basically any standard international converter that costs more than $5 will probably fit lol. 
i'd recommend the schmidt k5 because this pen has a schmidt nib/assembly, so it's like for sure compatible.

if anyone finds a cheap chinese brand that has a properly shaped converter, please contact me because so many pens have this problem, and i want to buy 20 of them.

**Q: What size nib us on this pen?**
A: By comparing this with other pens I have, I would say this is a bit finer than 0.7mm (medium), but visually heavier than 0.5 (fine). Frankly, if it were near a fine nib, I wouldn't like it; and I like this pen a lot!

**Q: What size is the nib?**
A: It's a fine nib. Good flow. Smooth writing.

**Q: Does it come with ink?**
A: Yes, one ink cartridge is attached.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Beautiful
*by M***D on 19 October 2025*

What a Fantastic Fountain pen Smooth and Elegant Works with art and writing Such an investment

### ⭐⭐⭐⭐⭐ Review
*by A***T on 16 March 2023*

I own many fountain pens (possibly too many) and this is one of my favourites. It's compact, comfortable, very light, and stylish. It also has one of the smoothest nibs I own which makes it a pleasure to write and sketch with. In fact it has a smoother nib than other pens in my collection that cost ten times as much making it fantastic value. I've no idea if I was lucky to get such a smooth nib with my first Muji fountain pen but I've read other positive accounts so perhaps it's a sign of great quality control. The only minor negative point I can think of is that it comes with only a small international cartridge but this means it can be used with a large international cartridge or convertor so it's easily remedied. Some people classify this as a starter pen and while I think it's true that its low cost and ease of use put it in the same league as the Lamy Safari and Pilot Metropolitan and it's not as fancy as high-priced pens it's definitely a pleasure to use at any time. Highly recommended.

### ⭐⭐⭐⭐⭐ Review
*by D***A on 12 March 2021*

Good fine nib

## Frequently Bought Together

- MUJI Aluminum Fountain Pen
- Schmidt Universal Fountain Pen Ink Converter
- Muji Aluminum Body Fountain Pen Cartridge Refills,2 Black Ink Refills

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-02-06*