Axiom 4-Pack Remanufactured HP 21 22 Ink Cartridge for HP Fax 1250 3180 PSC 1401 1410 4 Pack Axiom remanufactured Compatible Cartridges for HP 21/22 Ink Cartridge Works with ALL HP printers that use 21/22 ink cartridge Black: 2 HP 21 Black C9351AN ink cartridges Tri- Color: 2 HP 22 Tri-Color C9352AN ink cartridges Black: 150 pages per cartridge and Tri-color: 138 pages per color