This original Epson T2791 ink cartridge contains 34.1ml of top quality DURABright Ultra ink the to give you the very best quality prints. When used in conjunction with genuine T2712, T2713 and T2714 ink cartridges gives prints that are quick drying and smudge resistant. The Epson C13T27914010 is the extra high capacity black cartridge that gives you top quality prints for an estimated 2,200 pages per cartridge. This cartridge is compatible with the Epson Workforce WF-7110DTW and all other machines shown in the compatibility tab.