BFU erasable gel ink pens are different from normal gel pens. Magic thermo-sensitive ink is funny and useful. Erasing friction is safe for you and your friends. 1. Excellent writing experience: 0.5 mm point gives you a nice, solid, smooth line for general writing. 2. Erasing friction feature: Erasing friction feature is different from other chemical elimination, only through friction to improve the temperature to disappear the writing. So you can erase and rewrite again and again, cost-effective and convenient. 3. Thermo-sensitive ink: Once the temperature is up to 60 degree or more, the writing will disappear and once the temperature falls below -10 degree, the writing will reappear. 4. ATTENTION: PLEASE DON' T USE IT FOR THE SIGNATURE OR WRITING IMPORTANT DATA FILES.
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