SUNUNITEC 651 Printhead X4E75A M0H50A tri-Color for Smart Tank 500-618 SeriesThis complete printhead set includes both the X4E75AA and M0H50AA components needed for tri-color printing. The set is designed as a replacement for Smart Tank printers and works with a wide range of models including the Smart Tank 500, 510, 511, 530, 580, 610, 615, and 618 series. It also supports the Smart Tank Plus 551, 555, 559, 570, 571, and 651 series, plus the 500, 508, 618 and 655 All-in-One printers. This is a genuine replacement printhead assembly for restoring print poundsProductdimensions