Custom UV Light-up Invisible Pen - N0402307

Write invisibly secret messages, security markings etc. and only when you shine the light on the message you will reveal the secret behind. To add a brand ideas to your next promotion events with a printing on the barrel. Write your next promotional success story! Good gift for bank, office, school, supermarket, casino, student supplies, anniversary celebrations, advertising promotions, etc. 5.19" L