10 PCS Creative Magic UV Light Invisible Ink Pen Marker Pen(Black)

1. Currency check, invisible fonts, fonts can only be seen by lighting. 2. There are plastic insulating inserts between the light switches to prevent leakage. 3. High-quality fiber nib, longer service life. 4. Shell material: plastic 5. Size: 13.4cm 6. Can be erased or not: no