This genuine Epson Black 79XL Tower of Pisa High Yield Inkjet Cartridge is packed with 41.8ml of black ink for a higher print yield up to 2,600 pages. DURABrite Ultra ink ensures bright and crisp results, every time. It's compatible with the WorkForce Pro WF-4630DWF, WF-4640DTWF, WF-5110DW, WF-5190DW, WF-5620DWF and WF-5690DWF.