Banknote checker pen set: each set includes 8 counterfeit detector pens, enough for personal use and sharing. The pens are free from external logos or markings, which allows you to discreetly check all banknotes you are unsure of. Practical design: the counterfeit money pen provides an effective solution for quick and convenient identification of counterfeit banknotes. The results of the check are immediately visible, so you don't have to worry about accepting counterfeit money. Easy to carry: each note pen has a length of about 13 cm. Compact and miniaturised, it is extremely convenient and practical, so you can take it anywhere without taking up much space. Whether in your bag, handbag or on the desk - it fits anywhere. Easy to use: simply use this money tester pen to scratch over the surface of the banknotes for 1-2 seconds. Fake banknotes turn black, real banknotes do not change colour or leave a bright yellow mark. By using the counterfeit money detector, you can avoid losses and protect your property by detecting and rejecting fake currency. Versatile use: our money tester pen lightweight and easy to carry. They support currencies such as renminbi, US dollar, euro and others. As fake banknotes can occur in different environments including shops, small businesses, farmers markets and retail stores, our detection pens are extremely useful.