10PCS Money Counterfeit Pen Bank Note Markers Checker Pens Fake Forged Cash Bill Detector Tester

【[DESIGN】This counterfeit detector will not damage your banknotes. The counterfeit marker is the simplest way to identify counterfeit banknotes in real time. It can be verified in seconds. 【SIZE】Each piece is about 13cm / 5in. It's light and portable. It's small and convenient. You can carry it with you. Just put it in your bag, pocket, wallet, desk, anywhere you can store your pen. 【USAGE】Make a small mark on the banknote, and then you can observe its change. If there is a light yellow mark, the banknote is true. If there is a dark or black mark, the banknote is false, the small mark will disappear after a period of time, so don't worry about affecting your money. 【WIDELY USED】 Practical pen is suitable for all kinds of occasions, convenience stores, office supplies, agricultural markets, retail stores or any other environment that needs to test real gold and silver. 【PACKAGE INCLDES】10 paper money detection pens.