1 Roll (500 Labels) Direct Thermal Labels White (6" by 4") 100mm x 150mm for Zebra Printer GK420D GX420D GK420T : Amazon.co.uk: Stationery & Office Supplies
Zebra Driver for Zebra ZP500 Printer on Mac OS X - YouTube
102x102mm Green Direct Thermal Label, Small
76mm x 50mm White Thermal Direct Zebra Printer Labels 500 Per Roll 25mm Core | eBay
Zebra GK420d Thermal Printer | in Bow, London | Gumtree
Zebra ZQ520 - Direct Thermal, 230dpi, Bluetooth, USB, Near Field Communication