RFID Keychain Key Fob Matrial:ABS Mifare1 S50,Mifare1 S70,H4100,H4120,EM4450, ... optional (8digits,10digits,18digits)·Matrial : ABS ·Size : 35.3×28×6.4mm ·Physical Dimension : As above Weight : 6g~12g depends on ... SLI SI2,ICODE 1,Ti2048,Ti256,INSIDE2K,SR176 RFID Keychain Key Fob 0002 Card