Size:1 Inch Core - 4 x 2.5 - Prime - 04 Rolls SOJITEK 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 SOJITEK. Neither Zebra / Eltron nor any of the other printer companies mentioned above sponsor or endorse any products made or sold by SOJITEK