HOTCOLOR 4 Pack for 88XL Pigment Ink Cartridges (1 Black 1 Cyan 1 Magenta 1 Yellow) Show Accurate Ink Level High Yield High Capacity for OffieJet Pro L7500 L7550 L7555 L7580 L7590 Printer 1. What's in the box: 4 Pack ( Black Cyan Magenta Yellow ) Remanufactured Ink Cartridge for HP 88XL 2. 88XL Ink Cartridges work with: HP Officejet Pro K5400 K5400dn K5400dtn K5400tn K550 K550dtn K550dtwn K8600 L7480 L7550 L7580 L7590 L7650 L7680 L7750 L7780 Printer 3. Page Yield: 88XL Black Ink Cartridge Up to 2,400 pages; 88XL Cyan Magenta Yellow Up to 1,600 pages Per Ink Cartridge.(at 5% coverage) 4. Type: Work as HP 88XL Ink Cartridge Combo Pack C9396AN C9391AN C9392AN C9393AN ; Remanufactured by HOTCOLOR (ISO 9001 certified facility);Not made by HP. 5. Guarantee: 365 days quality warranty.If you have any other concerns or need immediate assistance, feel free to contact us via email.