50pcs UID Keyfob Block 0 Rewritable Writable 13.56MHz RFID Tag Key Fob Clone Card Tags Copy Cards Keychain

If you choose Mixed color, you will get: 10 blue, 10 gray, 10 black, 10 red, 10 yellow.

13.56MHz Writable UID Rewritable Block 0  Copy Cards

This card works the same as the normal IC cards, for Mif 1K S50 standard. Only the Sector 0 Block Zero which is known as the Serial Number/Manufacturers Block(Chip UID) could be programmed to any UID you want.