This Discount Inkjet remanufactured 2 Pack set includes the following:1 - Discount Inkjet Remanufactured C6656AN HP 56 Black inkjet cartridge1 - Discount Inkjet Remanufactured C6657AN HP 57 Tri-Color inkjet cartridgeThese are original Hewlett Packard ink cartridges which have been through one cycle of service and have been recharged. These Discount Inkjet remanufactured ink cartridge have been thoroughly cleaned along with the printhead nozzles. Following the cleaning process, we refilled the cartridges with a professionally manufactured ink formula that is designed to produce vibrant and long-lasting prints comparable to HP. After carefully inspecting the shell for leakage and monitoring the electrical circuitry for efficiency, we put the cartridge through a final print test to be certain it is worthy of our 100% money-back guarantee. Our remanufactured ink cartridges are not remanufactured by HP.We offer a One-Year 100% Quality Satisfaction Guarantee on our remanufactured ink cartridges.