RFID plastic key chainkeychain,key ring,smart key tag Material:ABS Size:39*39*5mm ... MOQ:100pcs,blue,red,black colour EM/TK/Mifare RFID plastic key chain ... DescriptionABS/PVC RFID key chainPhysicalModelAB0011AB0012AB0013AB0014AB0015NotesThickness7mm6.9mm9mm8.8mm5mm±0.04mmWidth35.3mm37.5mm40mm38mm39mm± ...