Attributes

Brand	-
Category	Stationery, Educational Electronics & Office Supplies / Pen Ink, Refills & Cartridges
Origin	-
Brand	M&G Chenguang
Ink Color	Crystal Blue, Black
Tip Caliber	3.4mm
Ink Type	Heat-Erasable Thermal Ink
Target Audience	Elementary Students (Grades 3-5)
Compatibility	Fountain Pens with 3.4mm Converters
Package Quantity	10 Refills per Pack
Material	Plastic Barrel, Non-toxic Ink
Erasing Method	Friction Heat (Rubbing)
Country of Origin	China

6 reviews

Anonymous

Mar 30, 2026

Rating: 4/5

Solid refill for the price

Can't beat the price for a pack of ten. They last a decent amount of time even with daily use by an elementary student. Will definitely purchase again when we run out.

Anonymous

Mar 25, 2026

Rating: 4/5

Good value, works as expected

Bought these for my son's fountain pen. They fit the 3.4mm converter perfectly. The ink flows smoothly, though it takes a firm rub to completely erase the text in colder weather.

Anonymous

Mar 25, 2026

Rating: 5/5

Smooth writing experience

These refills write very smoothly on standard notebook paper. No skipping or blotching. The fact that they are replaceable saves money compared to buying whole new pens every time.

Anonymous

Mar 16, 2026

Rating: 5/5

Perfect for my third grader!

My daughter loves these refills. She makes mistakes often when learning cursive, and being able to erase them cleanly without messy white-out is a game changer. The blue color is very vibrant.

Anonymous

Mar 05, 2026

Rating: 3/5

Decent but fades in heat

The erasing feature works well, but I noticed that if the notebook is left in a hot car, the writing starts to fade. Good for schoolwork, but maybe not for permanent records.

Anonymous

Mar 02, 2026

Rating: 5/5

Great black ink option

I specifically needed the black color for my 5th grader's math homework. The line is consistent and dark enough to be easily read, yet still erases cleanly with the pen tip.

5 FAQ

Q: Is the ink safe for children?

A: Yes, the ink is non-toxic and formulated to be safe for elementary school students. However, it is not intended for ingestion.

Q: Can I use this for official documents?

A: We do not recommend using heat-erasable ink for legal, financial, or official documents, as the text can disappear if exposed to high temperatures.

Q: How exactly do you erase the ink?

A: The ink is heat-sensitive. You can erase it by rubbing the written area firmly with the friction tip located on the end of the compatible pen, or by using a standard eraser vigorously to generate heat.

Q: Does the blue ink look light or dark?

A: The Crystal Blue ink provides a vibrant, medium-dark blue line that is clearly visible on white paper, making it ideal for grading or color-coding notes.

Q: Do these refills fit all fountain pens?

A: These refills are designed specifically for fountain pens that accept a 3.4mm caliber converter. Please check your pen's specifications before purchasing.

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