3/6Pcs Money Counterfeit Pen Fake Bill Detector Pens Note Marker Checker Banknotes Tester for Detecting Paper and Polymer Currency Black

【INSTANT VERIfICATION】Quickly recognize a fake from a real bill! Our counterfeit currency pens are specially formulated to deliver accurate and fast results within seconds. 【SIMPLE USAGE】 Works great with obvious color difference.The color of real banknote ink remains unchanged. If you encounter counterfeit banknotes, the ink will turn black. 【CONVENIENCE&SAFETY】To bring convenience to the cash register and prevent the receipt of counterfeit banknotes. 【WIDELY USED】 Suitable for restaurants, banks, convenience stores/retail stores and entertainment venues. 【REASONABLE PRICE】 Fast cost recovery，3x /6x for your chioce，Good quality and reasonable price，Long use