HP 56 inkjet print cartridge offers a patented, pigment-based, fade-resistant ink for laser-quality black text. Specifically designed to work with Hewlett-Packard inkjet printers, copiers and all-in-ones to deliver consistently true black text. Designed to work in HP Deskjet 450ci, 450cbi, 450wbt, 5150, 5150w, 5550, 5650, 5650w, 5850, 5850w, 9650, 9670, 9680; Digital Copier 410; Fax 1240; Officejet 4110, 4110v, 4110xi, 4215, 4215v, 4215xi, 5505, 5510, 5510xi, 5510v, 5605, 5610, 5610v, 5610xi, 6110, 6110xi; Photosmart 7150, 7260, 7260v, 7260w, 7350, 7450, 7450v, 7450xi, 7550, 7660, 7660v, 7660w, 7755, 7760, 7760v, 7760w, 7960, 7960w; PSC 1110, 1209, 1210, 1210v, 1210xi, 1311, 1315, 1315v, 1315xi, 1350, 1350v, 1350xi, 2110, 2110v, 2110xi, 2175, 2175v, 2175xi, 2210, 2210v, 2210xi, 2410, 2410v, 2410xi, 2510 and 2510xi. Each yields 520 pages.