A
Anonymous
Mar 30, 2026
Rating: 4/5
Good quality for the price
I use it regularly and the performance has been stable so far.
Description
M&G Heat-Erasable Ink Cartridges Thermal Sensitive Erasable Ink Crystal Blue for 3rd Grade Fountain Pens Elementary Students Replaceable Black Easy-Erase for 5th Grade Calligraphy 3.4mm Bore Official Flagship Store Authentic
Reviews
Attributes
| Brand | - |
| Category | Stationery, Educational Electronics & Office Supplies / Pen Ink, Refills & Cartridges |
| Origin | - |
| Brand | M&G |
| Ink Color | Crystal Blue |
| Bore Size | 3.4mm |
| Ink Type | Heat-Erasable Thermal Sensitive |
| Compatible Pen Grade | 3rd to 5th Grade Fountain Pens |
| Package Quantity | 10 Cartridges per Pack |
| Material | Plastic Barrel with Special Thermal Ink |
| Erase Method | Friction Heat (Rubbing) |
| Origin | Official Flagship Store Authentic |
| Ideal Use Case | School Calligraphy and Practice Writing |
6 reviews
A
Anonymous
Mar 30, 2026
Rating: 5/5
Will buy again
Helpful product page and smooth experience overall.
A
Anonymous
Mar 19, 2026
Rating: 5/5
Solid everyday option
Simple, reliable, and easy to integrate with my existing setup.
A
Anonymous
Mar 18, 2026
Rating: 5/5
Exactly what I expected
The M&G Heat-Erasable Ink Cartridges Thermal Sensitive Erasable Ink Crystal Blue for 3rd Grade Fountain Pens Elementary Students Replaceable Black Easy-Erase for 5th Grade Calligraphy 3.4mm Bore Official Flagship Store Authentic arrived in good condition and matches the listing details.
A
Anonymous
Mar 16, 2026
Rating: 4/5
Reliable and practical
After a few days of use, it feels dependable and consistent for routine tasks.
A
Anonymous
Mar 13, 2026
Rating: 4/5
Works as described
No major issues. The finish and fit are both acceptable for this range.
5 FAQ
Q: Are these cartridges refillable?
A: No, these are single-use replaceable cartridges. Once empty, they should be recycled and replaced with a new one.
Q: Will these cartridges fit a standard 3.4mm fountain pen?
A: Yes, these cartridges are specifically designed with a 3.4mm bore to fit standard fountain pens used by elementary students.
Q: Is this ink permanent once it cools down?
A: The ink remains visible at room temperature but can be erased again with friction heat. However, please note that extreme cold temperatures may cause the ink to reappear.
Q: Does the Crystal Blue color show up clearly on white paper?
A: Yes, the Crystal Blue ink provides a vibrant and clear line on standard white notebook and printer paper, making it ideal for schoolwork.
Q: How exactly do you erase the ink?
A: The ink is heat-sensitive. Simply rub the written area firmly with the friction eraser on the end of the pen or your finger until the heat makes the ink disappear.
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