Here's a neat idea, our invisible pen marker with built
in LED light! Great for security marking or just having
some UV fun. The pen is filled with our invisible ink
formula and will only appear when revealed using the
built in UV LED light.
You wont find cheaper UV light on the market. Purple
pen surround and the invisible ink glows yellow under
the built in LED.
This listing is for a multipack of 10
pens so that's just £0.89 for each one - Bargain!!!