Dri Mark Retractable Counterfeit Pen

Quickly check for fraudulent bills with just one mark using this counterfeit detector pen. Retractable design eliminates the need for a cap and lets you easily access the pen to quickly mark bills in busy settings. Its special color-changing formula creates a light mark when a bill passes or a dark mark when it fails to help prevent you from making costly errors. Counterfeit detector pen is perfect for retail environments, special events, valet services and more. Pen is designed for use with U.S. currency.