OCProducts compatible replacement for Epson 522 ink bottle 4 Pack. Contents: 1 X Compatible for T522120-S Black Ink Bottle1 X Compatible for T522220-S Cyan Ink Bottle1 X Compatible for T522320-S Magenta Ink Bottle1 X Compatible for T522420-S Yellow Ink Bottle Page Yield:Up to 4500 pages per black bottle Up to 7500 pages per color bottle Printer :EcoTank ET-2720 All-in-One Supertank PrinterEcoTank ET-4700 All-in-One Supertank Printer All manufacturer brand names and logos are registered trademarks of their respective owners. We reference these Mfg names for compatibility purposes only