These are invisible ink magic pens.
Specifications:, The C-shape handle allows you to be hands free to use your smartphone, while the umbrella leans against your body., It can be stood
Biplut Invisible Ink Pen Built in UV Light Magic Marker Gift Student School Stationery (Pink)
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LEGAMI 3 in 1 Magic Pen with Invisible Ink – Space
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🌟【Perfect Set】This set includes 4 pens, 40 ink pen refills , 6 pencil grips trainer, and 1 pen bag, making it the perfect set for children to practice
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