11 Compatible Ink Bottles of 3 Black within 130ML and 2 of each PhotoBlack, Cyan Magenta Yellow within 70ML (Dye Ink). For Epson EcoTank ET 7700 & ET 7750 / ET7700 ET7750 Printers. Page Yield: Up to 7500 pages per T512 Black Bottle and Up to 6000 pages per T512 Photo Black and Color bottle @ 5% Standard Coverage Rate on A4 Paper Size. Fill Directly from the Bottles. The Bottles are designed to ensure easy and hassle-free filling experience. Do not mix with other ink types. Run the cleaning cycle of your printer to remove the residue of other ink types inside the printer.