25pk Thermal and Receipt Printer Cleaning Card - Standard Sizes 4x6 Presaturated magnetic head cleaning cards. Presaturated cards instantly clean heads on point-of-sale credit card readers, access control/ID card readers and all open systems. GREAT USE FOR MOST ZEBRA, ITHACA, EPSON, BIXOLON 4X6 PRINTER The individually packed cards are non-abrasive and incredibly easy to use. 25 INDIVIDUAL PACKS