HP 88XL Black Cyan Magenta Yellow 4PK Ink Cartridges
Amazon.com: 88XL Black Ink Cartridge | Replacement for HP 88XL Ink Cartridges Black Works with Pro K5300 K5400 K5456z K550 K550dtn K550dtwn K8600 K8600dn L7380 L7480 L7500 L7550 L7555 L7580 Printer