100pcs UID RFID Tag keyfob for 13.56MHz Writable Block 0 HF ISO14443A Used to Copy Cards

13.56MHz Writable mif 0 zero HF ISO14443A Used to Copy Cards

This card works the same as the normal IC cards, for 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.

You can select all one color,for example "please send black".

Or mixed color,for example "20pcs blue,30pcs red,30pcs yellow, 20pcs black".