This remanufactured HP C4931A (HP 81) cyan inkjet cartridge is an original Hewlett Packard cartridge that has been professionally remanufactured using both OEM and non-OEM components. It features a 'smart chip' that optimizes print quality and enhances reliability while monitoring ink levels. The efficient ink delivery system allows for economical replacement of individual cartridges. Our remanufactured ink cartridges provide quality at a fraction of the cost of original HP cartridges. Backed by our 100% Quality Satisfaction Guarantee.