HP 61 Black Ink Cartridge (CH561WN), 2 Ink Cartridges (CZ073FN) for HP Deskjet HP 61 ink cartridges work with: HP Deskjet 1000, 1010, 1012, 1050, 1051, 1055, 1056, 1510, 1512, 1514, 1051, 2050, 2510, 2512, 2514, 2540, 2541, 2542, 2543 2544, 2546, 2547, 3000, 3050, 3051, 3052, 3054, 3056, 3510, 3511, 3512 HP ENVY 4500, 4502, 4504, 5530, 5531, 5532, 5534, 5535. HP Officejet 2620, 2621, 4630, 4632 Up to 2x more prints with Original HP ink vs refill cartridges. HP 61 ink cartridge yield (approx.) per cartridge: 190 pages. Operating temperature range : 59 to 90F Original HP ink cartridges: genuine ink for your HP printer. What's in the box: New Original HP 61 pack of 2 ink cartridges (CZ073FN): 2 black 61 ink cartridges (CH561WN) Color: Black , Print head nozzles - 336