INKUTEN Set of 4 Refill Eco tank Ink Kit 70ml for T6641 T6642 T6643 T6644 and Expression Ecotank ET-2500 ET-2550 ET-4500 ET-4550 L100 L110 L120 L200 L210 L300 L350 L355 L550 L555 Printers 4 Refill Ink Kit (Black Cyan Magenta Yellow) Cartridge number : T6641 T6642 T6643 T6644 For Expression ET-2500 ET-2550 ET-4500 ET-4550 L100 L110 L120 L200 L210 L300 L350 L355 L550 L555 Printers Regular refill bottle for an easy using. 70ml / Bottle