Size: 15 Features. Waffletechnology MICR cleaning card is design to clean POS Check readers successfully as it transports through the paper path cleaning the sensitive Magnetic Heads Paper Path and Transport Rollers. Cleaning cards have been embraced by OEMs to provide a positive cleaning performance and extending the overall life of the check readers. 15 Waffletechnology MICR Check Reader Cleaning Card per boxSpecifications. Color White. Material Plastic Core