If you're passionate about IT and electronics, like being up to date on technology and don't miss even the slightest details, buy Printer Labels Zebra PolyPro 4000D 50,8 X 50,8 MM White 19 mm (20 Units) at an unbeatable price.. Size: 50,8 X 50,8 MM. Colour: White. Material: polypropylene. Technology: Thermal. Units: 20 Units. Approx. diameter: 19 mm