Description
- Writing becomes totally invisible when ink dry.
- Shine UV light (Batteries Included) and message becomes visible.
- Writes on most surfaces such as paper, glass, fabric, even human skin.
- Each spy pen with an insulation film on the UV light, please remove it before using.
- Can be used for counterfeit bank notes detector, currency detector.
Material: ABS plastic Dimensions: 13.3 * 1.0cm Weight: 11g approx. Color: yellow, green, pink, blue, black and purple, 2pcs each color Quantity: 12 pieces Package contents: 12pcs Invisible ink pens
