The Epson EcoTank 664 multipack (C13T664640) combines the four essential colors—black, cyan, magenta, and yellow—in a single package. Each shade comes with 70 ml of genuine ink, a generous volume suitable for regular users looking to limit refills. Compatible with a wide range of EcoTank printers (ET-2500, ET-2550, ET-2600, ET-2650, ET-4500, ET-14000, L355, L555), this pack integrates directly into the refillable tanks of these inkjet models. Choosing genuine Epson ink ensures an exact match with the printer's specifications, for consistent, reliable prints over time.