Attributes

Brand	-
Category	Stationery, Educational Electronics & Office Supplies / Pen Ink, Refills & Cartridges
Origin	-
Ink Colors	Pure Blue, Black, Red
Cartridge Diameter	3.4mm
Compatibility	Universal fit for most standard fountain pens
Package Quantity	30 cartridges per pack (10 of each color)
Material	High-grade plastic with sealed foil cap
Target Audience	Elementary school students and calligraphy beginners
Ink Type	Water-based, non-toxic dye ink
Portability	Compact design for easy storage in pencil cases
Leak Protection	Double-sealed ends to prevent drying and leaking
Usage Scenario	Daily writing, homework, and artistic sketching

6 reviews

Anonymous

Mar 23, 2026

Rating: 5/5

Perfect for my daughter's school supplies

These cartridges fit perfectly into her beginner fountain pen. The colors are vibrant, especially the blue, and they don't leak in her backpack. Great value for the price.

Anonymous

Mar 15, 2026

Rating: 5/5

No more mess!

Switching from bottled ink to these cartridges has saved me so much cleanup time. They are easy to swap out, and the seal keeps them fresh until I need them.

Anonymous

Mar 11, 2026

Rating: 5/5

Excellent bulk pack

Buying in bulk is much cheaper than buying small packs at the stationery store. The quality is consistent across all three colors. Highly recommend for teachers.

Anonymous

Mar 10, 2026

Rating: 4/5

Good universal fit

I was worried these wouldn't fit my vintage pen, but the 3.4mm size worked flawlessly. The black ink flows smoothly. Only giving 4 stars because the red is slightly lighter than expected.

Anonymous

Mar 10, 2026

Rating: 5/5

Great for travel

I keep a few of these in my laptop bag for meetings. They are lightweight, durable, and the caps stay secure. The pure blue is my favorite shade.

Anonymous

Mar 09, 2026

Rating: 3/5

Decent but runs out quickly

The ink quality is fine for everyday writing, but I feel like I go through them faster than branded cartridges. Still, for the price, it's a fair trade-off.

5 FAQ

Q: Can I mix colors in the same pen?

A: We recommend flushing the pen with water before switching colors to prevent mixing and potential clogging. While you can switch them, mixing inside the feed is not advised.

Q: Are these cartridges refillable?

A: No, these are designed as single-use disposable cartridges. For reusable options, please check our section on ink converters.

Q: Will these fit a Lamy Safari fountain pen?

A: Yes, the Lamy Safari uses standard European 3.4mm cartridges, so these will fit perfectly.

Q: Is the ink waterproof?

A: No, this is water-based dye ink designed for smooth writing and easy cleaning. It is not waterproof and may smear if exposed to water.

Q: How long do the cartridges last once opened?

A: Once inserted into a pen, a single cartridge typically lasts for 2-3 weeks of daily writing, depending on your writing style and nib size.

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