cash tester: counterfeit detector , detector pen: money detector 1) Our money detector detector pens uses specially formulated chemical that detects fake currency instantly,and also a UV light.2) Simply presses the tip of the pen to the bill3) If it turns yellow or clear the bill is good, if it turns black or brown the bill is suspicious4) Instructions printed on the pen5) Works on most currencies worldwide

6)It's a very good promotion gift, the barrel can be printed with your logo or message

Money Detector Pen