LxTek Remanufactured Ink Cartridge Replacement For HP 56 & HP 57 (2 Black | 2 Tri-Color) C6656AN C6657AN LxTek remanufactured ink cartridge replacement for HP 56 & 57 have been awarded ISO9001 certification, and we have independent laboratories periodically verify product quality to ensure a smooth user experience. Page Yield: 520 pages per black and 500pages per tri-color, cartridge at 5% coverage Compatible Printers: 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 Package Contents: 4 Pack (2 Black | 2 Tri-color) remanufactured HP 56 & 57 ink cartridges. Guarantee: 1-year limited warranty / Shelf life: 18-24 months