HOTCOLOR 15PK 88XL Ink Cartridge (6 Black 3 Cyan 3 Magenta 3 Yellow) for HP Officejet Pro K5400 K550 K8600 L7650 L7500 L7550 L7580 L7590 L7600 Printer 1. What's in the box: 15 Pack 88XL (6 Black 3 Cyan 3 Magenta 3 Yellow ) Remanufactured Ink Cartridge for HP 88 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: 88 XL Black Up to 2400 pages; 88XL Cyan Magenta Yellow Up to 1700 pages Per Color Ink Cartridge.(at 5% coverage) 4. Type: Work as HP 88XL Black and HP 88 XL Cyan/Magenta/Yellow Ink Cartridge (C9396AN C9391AN C9392AN C9393AN); Remanufactured by HOTCOLOR (ISO 9001 certified facility);Not made by HP. 5. Guarantee: 120 days quality warranty.If there is any problem,DO NOT hesitate to contact us.