LxTek Remanufactured Ink Cartridge Replacement for HP 56 C6656AN to use with Deskjet 5850 5650 5150 5550, Photosmart 7150 7350 7260 7450 7550 7760, Officejt 4215, PSC 2210 2510 Printer (2 Black) LxTek remanufactured ink cartridge replacements for HP 56 are manufactured at ISO9001 and ISO14001 factory standards Page Yield: 520 pages per black cartridge at 5% coverage, totally 1040 pages. Package Contents: 2 Pack (2 Black) remanufactured ink cartridges for 56 C6656AN Compatible Printers: HP Deskjet 450, 5145, 5150, 5550, 5650, 5652, 5655, 5850, 9650, 9670, 9680; Digital Copier 410; Officejet 4105, 4211, 4251, 4252, 4255, 4256, 4259, 5505, 5508, 5510, 6105, 6110; Photosmart 7150, 7260, 7350, 7450, 7550, 7660, 7755, 7960; PSC 1110, 1118, 1200, 1218, 1310, 1340, 1350, 1355, 2105, 2108, 2110, 2150, 2170, 2171, 2175, 2179, 2210, 2212, 2400, 2405, 2410, 2420, 2450, 2510, 2550 Printer Guarantee: 24 months limited warranty / Shelf life: 24 months. Any question about using our product, feel free to contact us for troubleshooting tips, replacement or refund