The 26 Black Inkjet Print Cartridge is ideal for home and small business users who want professional-quality, small and large-format prints with rich, water-resistant black prints. Features - Rich, water-resistant black printouts - Ensures consistent, professional-quality printing - Genuine HP-engineered ink for sharp results - Specially designed to work with HP inkjet specialty papers and transparency films or plain papers and on a variety of HP DesignJet printing material Specifications - Cartridge yield : Approx. 790 pages (actual yield depends on specific use including images printed, printer, print settings and other factors) - Ink volume : 40 ml Compatibility - HP Deskjet : 400, 420c, 500, 500c, 505j, 505k, 520, 540, 550c, 560c, 560j, Deskjet Plus - HP Deskjet Deskwriter : CCK, 520, 540, 550c, 560c - HP Officejet : 300 1, 330 1, 350 1, LX 1 All-in-One Unit Measurement : 140 x 116 x 37 mm UOM : Unit