What converter would be compatable with this pen?

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.

What size nib us on this pen?

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!

What size is the nib?

It's a fine nib. Good flow. Smooth writing.

Does it come with ink?

Yes, one ink cartridge is attached.

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MUJI Moma Aluminum Fountain Pen

Product ID: 262741288

Details

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

📏13.7 cm sleek length

⚖️20g ultra-lightweight

🖋️Smooth fine nib 0.3-0.5mm

R1312

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Description

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

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.

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.

Specifications

ASIN	B00MDRZLHA
Additional Features	Refillable
Age Range Description	Adult
Age range (description)	Adult
Animal Theme	no animal theme
Best Sellers Rank	#28,052 in Office Products ( See Top 100 in Office Products ) #249 in Fountain Pens
Body Shape	Cylindrical
Brand	MUJI
Brand Name	MUJI
Closure Type	Click-Off Cap
Color	Black
Colour	Black
Customer Reviews	4.4 out of 5 stars 2,574 Reviews
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
Ink colour	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	Aluminum
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
Writing instrument form	Fountain Pen

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R1312

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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