LxTek Remanufactured Ink Cartridge Replacement For HP 56 (4 Black) C6656AN These LxTek remanufactured ink cartridges contain high quality ink that has been formulated for optimum performance. All cartridges have been tested to ensure a hassle free printing experience. Package Contents: 4 Pack of LxTek Remanufactured HP 56 ink cartridges - 4 Black Compatible Printers: Deskjet 450 Deskjet 5150 Deskjet 9650 Digital Copier 410 FAX 1240 Officejet 4105 Officejet 5505 Officejet 6105 Photosmart 7150 Photosmart 7755 PSC 1110 PSC 1200 PSC 1310 PSC 2105 PSC 2400 . List may not contain all models. Page Yield : 520 Pages per Black (pigment ink) Cartridge at 5% coverage Warranty: All products come with a 1-year limited warranty / Shelf Life: All products have a shelf life of 18-24 months