INKUTEN Refill Ink Kit for EcoTank ET3600 ET16500 ET4550 ET4500 774 664 (140ml BK 70ml CMY) Clogging free, Wide color gamut with brightest and Vivid colors. Perfect printing stability and safety. 4 pack Refill Ink Kit --- 1BK+1C+1M+1Y, 140ml/ Black and 70ml/ Cyan Magenta Yellow. 95% Saving on your Printing Cost. 100% Guaranteed Quality!. Compatible for Printers: ET3600 ET16500 ET4550 ET4500