... ,key ring,smart key tag Material:ABS Size:39*39*5mm MOQ:100pcs,blue,red,black colour EM/TK/Mifare RFID plastic key ... on readerWeight6g-12g6g-12g6g-12g6g-12g6g-12g ColourGray,blue,yellow,black,red,green,other colors on request(MOQ:3000PCS)LogoScreen printing ...