2pk Axiom Remanufactured Compatible Ink Cartridge For HP 56 57 Combo For Officejet 4110 4215 5505 5510 6110 Printer 2 Pack HP 56/HP 57 Remanufactured Cartridge Works with ALL HP printers that use 56/57 ink cartridge 1 HP 56 Black C6656AN ink cartridges & 1 HP 57 Tri-Color C6657AN ink cartridges Black: Yields 450 pages per cartridge Tri-color: Yields 130 pages per color