Check the listing for details. New Staples Counterfeit Detection Pens - USA - 3 Pack. Condition: New. Listed at 7.95 USD. Product details: Staples Counterfeit Detection Pens (Quantity - 3 Pack) Identify fraudulent bills by using these Staples counterfeit detector pens on all your incoming cash handling environment personally and professionally. Simple to use and providing immediate results & are ideal to keep by every register or cash box at home too. Counterfeit pens detect Counterfeit bills by each pen using an iodine-based ink that evaporates completely on legal bills but leaves a dark stain on counterfeits. If the bill is Good, Pen will leave an amber mark on fiber-based paper used in authentic currency. Antimicrobial technology is designed to inhibit bacterial and fungal growth on the pen's surface & The Pen’s Cap prevents pen from drying out... Free USPS Shipping!No ReturnsThanks for looking