LD Remanufactured Ink Cartridge Replacement for HP 711 CZ133A High Yield (Black, 2-Pack) Capacity (ml): 80 per cartridge | Shelf life: 12-18 months per cartridge The use of remanufactured cartridges and supplies does not void your printers warranty All LD branded products are backed by a 100% satisfaction and LIFETIME guarantee These professionally remanufactured LD cartridges for HP 711 have a smart chip that makes continuous adjustments to optimize print quality and enhance reliability and cost effectiveness as well as monitor ink levels For use in the following Ricoh Hp DesignJet printers: T120, and T520