---
product_id: 262741288
title: "MUJI Moma Aluminum Fountain Pen"
brand: "muji"
price: "B/.77"
currency: PAB
in_stock: true
category: "Muji"
url: https://www.desertcart.com.pa/products/262741288-muji-moma-aluminum-fountain-pen
store_origin: PA
region: Panama
---

# 13.7 cm sleek length 20g ultra-lightweight Smooth fine nib 0.3-0.5mm MUJI Moma Aluminum Fountain Pen

**Brand:** muji
**Price:** B/.77
**Availability:** ✅ In Stock

## Summary

> 🖋️ Elevate your everyday writing — because your ideas deserve the best.

## Quick Answers

- **What is this?** MUJI Moma Aluminum Fountain Pen by muji
- **How much does it cost?** B/.77 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/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

- • **Precision Writing:** Fine 0.3-0.5mm nib delivers smooth, consistent ink flow for flawless notes and sketches.
- • **Compact & Portable:** Slim 1cm diameter and 13.7cm length fit perfectly in your professional carry, ready for on-the-go creativity.
- • **Effortless Elegance:** Full aluminum body for a sleek, modern look that commands attention in any meeting.
- • **Ambidextrous Comfort:** Smooth grip and balanced weight designed for all-day writing ease, no matter your hand orientation.
- • **Sustainable Investment:** Refillable with Muji cartridges, combining eco-consciousness with long-lasting performance.

## Overview

The MUJI Moma Aluminum Fountain Pen is a lightweight, precision-engineered writing instrument crafted in Japan. Featuring a durable aluminum body, a smooth fine nib (0.3-0.5mm), and compatibility with refillable Muji ink cartridges, it blends minimalist design with professional-grade performance. Perfect for millennials who value style, sustainability, and superior writing experience.

## Description

MUJI Moma Aluminum Fountain Pen,MUJI Moma Aluminum Fountain Pen

## 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 |
| Additional Features | Refillable |
| Age Range Description | Adult |
| Animal Theme | no animal theme |
| Best Sellers Rank | #11,996 in Office Products ( See Top 100 in Office Products ) #94 in Fountain Pens |
| Body Shape | Cylindrical |
| Brand Name | MUJI |
| Closure Type | Click-Off Cap |
| Color | Black |
| Customer Reviews | 4.4 4.4 out of 5 stars (2,576) |
| Drill Point | Nib |
| EU Spare Part Availability Duration | 2 Years |
| Global Trade Identification Number | 04547315136865 |
| Grip Type | Smooth |
| Hand Orientation | Ambidextrous |
| Hardness | F |
| Included Components | Black ink cartridge |
| Ink Base | Water |
| Ink Color | Black |
| Item Diameter | 10 Millimeters |
| Item Dimensions | 13.7 x 1 x 1 centimeters |
| Item Weight | 20 Grams |
| Line Size | 0.3-0.5 millimeters |
| Manufacturer | Other |
| Material Type | Aluminum |
| Model Name | Aluminum Body |
| Model Number | 15136865 |
| Pattern | Single Item |
| Recommended Uses For Product | Writing |
| Style | Modern |
| Theme | Country |
| Unit Count | 1 Count |
| Water Resistance Level | Not Water Resistant |
| Writing Instrument Form | Fountain Pen |
| Writing Technique | fountain pen |

## 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** 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.

## 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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**Shop now:** [https://www.desertcart.com.pa/products/262741288-muji-moma-aluminum-fountain-pen](https://www.desertcart.com.pa/products/262741288-muji-moma-aluminum-fountain-pen)

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*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-10-08*