Invisible ink pen,secret pen,secret message pen

Features: 1) Invisible ink refill 2) Invisible ink is readable with the special light at the end of the pen3) Applications: amusement, secret messages, invisible tattoos, drawing in the
darkness, personalized objects, highlighter and anti-counterfeiting

Money detector pen, anti-counterfeiting pen,UV pen,Universal Counterfeit Money Detector Pen,MOney tester pen,Invisible ink pen