The HP No. 56 Black Inkjet Print Cartridge features pigmented black ink formulated to deliver crisp, laser-quality text. Other key features include the latest printhead design, a tiny ink drop size and an extremely efficient ink delivery system. Suitable for HP 450cbi / 4110 / 4255/ 5100 / 5510 /5150 / 5550 /5650/ 5610/ 5652 / 5850 / 6100 / 6110 / 7260 / 7450 /7550 / 7660 / 7760 /9650/9670/9680. PCS 1110/1200/1210/1215/1310/1315/1350/2110/2210/2410/2510/ PS2400 7150 - 19ml