JCINK 4Pack Remanufactured Ink Cartridge 88 88XL for HP officejet pro K550 L7500 L7400 K8600 L7580 L7590 L7550 L7750 L7780 Printer 1.Packing list: 4 Pack  ( 1Black, 1 Cyan, 1 Magenta, 1 Yellow) 2.Good after-sales service 3.ISO 9001 Certified Manufacturer 4.No made by HP 5.Compatible printers: HP OfficeJet Pro printers: K5400, K5400dn, K5400dtn, K5400tn, K550, K550dtn, K550dtwn, K8600, K8600dn, L7480, L7500, L7550, L7555, L7580, L7590, L7600, L7650, L7680, L7681, L7700, L7750, and L7784