Package Content:Black Print Head(X4E75AA) ,Tri-colour Print Head(M0H50AA) X4E75AA M0H50AA Print Head Use for Smart Tank 500/510/530/610 Series and Smart Tank Plus 550/570/650 Series Compatible Models: HP 508 511 518 519 531 538 618 Printer Product Type:Tank system Printhead Easy to install: The detailed replacement steps are in the description NEW X4E75AA M0H50AA PrintHead Smart Tank Plus Print Head Use for HP 517 532 617 515 508 510 511 518 519 531 538 610 618 550 570 650 Printer