MaterialPVC/PET/PAPER/anti-metal/3M adhesiveSizeRound: 25mm/ f30mm/ f40mm etcSquare: 18x18mm/25x25mm/35x35mm/45x45mm/50x50mm etcRectangle: 40x35mm,40x25mm,15x30mm,30x50mm18x56mm,85x54 mm etc CustomizedChip options13.56MHZ: Ntag213/216 ,Ultralight EV1,F08,1K S50 ,4K S70 , Desfie 2K/4K/8K,Icode sli/x/s ,Plus S/X SLE66R01,FElica-LiTE-S,Topaz512,TI2048 , Ving card etc 125KHZ: TK4100,EM4200,T5577,EM4305,EM4450 Hitag1/2/S, etc UHF: Alien H3,M4D,4E,4QTMinimum QTY500 pcsNFC Stickers are NFC Labels with NFC Chip embedded in paper, PET or other materials. Different sizes and shapes available. We can custom print NFC Stickers with your Logo, Graphics, or serial number. For more sizes and shapes,please contact us. Antenna sizes and shapes can be customized. Please help to send me your address in details,if you would like to evaluate the free samples. Please contact us if any other questions. Your comments would be appreciated. url:http://www.oaseschina.com