Description
Reviews
| Brand | - |
| Category | Stationery, Educational Electronics & Office Supplies / Pen Ink, Refills & Cartridges |
| Origin | - |
| Brand | Hero |
| Ink Type | Heat-Sensitive Erasable |
| Cartridge Caliber | 3.4mm |
| Package Quantity | 30 Pieces |
| Ink Color | Blue Black |
| Erase Method | Friction Heat (Rubbing) |
| Target Audience | Students and Children |
| Compatibility | Standard 3.4mm Fountain Pens |
| Packaging Type | Bucket Pack |
| Country of Origin | China |
Anonymous
Mar 24, 2026
Rating: 4/5
Reliable replacement cartridges
Easy to swap out and the ink color is consistent. Not completely invisible when erased, but faint enough for corrections.
Anonymous
Mar 22, 2026
Rating: 5/5
Great for practicing handwriting
My son is learning cursive and these allow him to practice without wasting paper. The bucket pack will last us the whole school year.
Anonymous
Mar 10, 2026
Rating: 5/5
Smooth writing experience
I was worried these might be scratchy, but they write just like regular ink until you need to erase. The 3.4mm fit is perfect for my Hero pen.
Anonymous
Mar 10, 2026
Rating: 4/5
Good value for bulk pack
Buying 30 at once is very economical. The erasing works well with friction, though you have to rub a bit firmly. Great for school supplies.
Anonymous
Mar 06, 2026
Rating: 5/5
Perfect for my daughter's homework
These cartridges are a lifesaver! My daughter makes fewer mistakes now because she can easily erase them by rubbing the paper. The ink flows smoothly and doesn't skip.
Anonymous
Mar 02, 2026
Rating: 3/5
Works but fades in hot cars
The erasing feature is cool, but I left my notebook in the car on a sunny day and some notes disappeared. Just be careful with heat exposure.
Q: Can I use this ink for official documents?
A: We do not recommend using heat-sensitive erasable ink for legal, financial, or official documents, as the ink can potentially fade under high temperatures or be altered.
Q: Does the ink come back if I put the paper in the freezer?
A: Yes, that is a unique property of this thermochromic ink. If exposed to temperatures below approximately -10°C (14°F), the erased writing may reappear.
Q: How exactly do I erase the ink?
A: Simply rub the written area firmly with the rubber eraser tip found on most compatible pens or a standard rubber eraser. The friction generates enough heat to make the ink disappear.
Q: Will these fit a standard Pilot FriXion pen?
A: These cartridges are designed for pens with a 3.4mm caliber. While some Pilot models use similar sizes, we recommend checking your specific pen's cartridge diameter before purchasing to ensure compatibility.
Q: Are all 30 cartridges the same color?
A: Yes, this bucket pack contains 30 cartridges of the same ink color, typically Blue Black, unless otherwise specified in the product variation selected.
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