This combo set from HP includes a black ink cartridge and a colour cartridge. This will give you ample black ink for 480 pages and enough colour for 330 pages. The cartridges are compatible with the following printers: HP Deskjet 1000, 1050A, 1510, 2050, 2054A, 3050,3052, 3054A, 3057, 3511, HP Envy 4504, 4509 5534, HP Officejet 26222, 4639 Specifications Approx. page yield: black 480 pages / colour 330 pages Pack contains 301XL black cartridge and 301XL colour cartridge
