10Pcs NFC Coil UID Changeable RFID Card with Block Writeable Chip for MF1 1K S50 13.56Mhz NFC Card

Features : This coil card works the same as the normal IC cards, for Mf1 1K S50 standard. Only the Sector 0 Block Zero which is known as the Serial Number/Manufacturers Block(Chip UID) could be progra