The 664 Series Refill Ink Set is an essential consumable for Epson EcoTank printers. Designed specifically for the high-capacity ink tank system, this set includes the four necessary colors: Black, Cyan, Yellow, and Magenta. Each bottle contains 70ml of dye-based ink, formulated to deliver vibrant and long-lasting prints .

Performance & Quality:
This ink provides consistent, high-quality output suitable for everyday documents, school projects, and photo printing. The black ink can yield approximately 4,000 to 4,500 pages, while each color bottle yields approximately 6,500 to 7,500 pages, dramatically reducing the cost-per-print compared to traditional ink cartridges . The dye-based formula ensures smooth, bright colors without clumping.

Mess-Free Refill Design:
The ink bottles feature a specialized, keyed nozzle design that only fits into the correct color tank on your printer. This prevents accidental refills with the wrong color. The drip-free spout and resealable cap ensure a clean and simple refill process without any mess or ink waste .

Compatible Printers:
This ink is compatible with a wide range of Epson EcoTank models, including but not limited to:

L Series: L100, L110, L120, L130, L200, L210, L220, L300, L310, L350, L355, L360, L365, L380, L385, L405, L455, L485, L550, L555, L565, L605, L655, L1300, L1455 .

ET Series: ET-2500, ET-2550, ET-2600, ET-2650, ET-4500 .

Refill Instructions:

Open the printer's ink tank cover.

Open the cap of the corresponding ink tank (Black, Cyan, Magenta, or Yellow).

Uncap the new 664 ink bottle.

Insert the bottle nozzle into the tank's filling port (the bottle design prevents incorrect insertion).

Wait for the ink to drain completely into the tank. The tank is full when the ink reaches the indicated fill line.

Remove the bottle and securely close the tank cap.

Why Choose This Refill Set:

Cost-Effective: High page yield per bottle lowers printing costs significantly.

Vibrant Quality: Produces sharp text and vivid colors for photos and graphics.

User-Friendly: Keyed nozzles prevent mistakes and messy spills .

Eco-Friendly: Reduces plastic waste compared to traditional cartridges.