Optimise your HP printing results with the Hewlett-Packard HP 21 Black Ink Cartridge.The HP 21 Black Ink Cartridge is specifically designed to generate smudge-free results with the following HP printers:PSC 1402, 1410, 1415 & 1417 multifunctions, Deskjet F310, F370, F380 series, Deskjet D1360, D2360 & D2460 series, Deskjet 3920 & 3940 inkjet printers, Officejet 4315, 4355, 5605, 5610, Deskjet F4130, F4140 & F4150 multifunctions, Deskjet F4170, F4180 & F4190 series