OfficeSmart Labels ZE3400600-4 x 6 Inch Zebra Compatible Direct Thermal Labels for Industrial (4 Rolls, White, 1000 Labels Per Roll, 3 inch Core) 3" Core / 1000 Labels per Roll Direct Thermal / Rounded Corners Perforations Between Each Label / Top Coated with Moisture and Oil Barrier Compatible with most Direct Thermal Printers including "Zebra", "Eltron", "Datamax", "Intermac", "SATO"and "Fargo" OfficeSmartLabels does not sell Zebra/Eltron branded labels. "Zebra", "Eltron", "Datamax", "Intermac", "SATO"and "Fargo" and other related branded product names and SKU trademarks are trademarks of their respective owners and not OfficeSmartLabels. Neither Zebra/Eltron nor any of the other printer companies mentioned above sponsor or endorse any products made or sold by OfficeSmartLabels.