HP Ink Tank Print-Head Black M0H51A Single Pack (1 Black Head [printer head]) for (HP GT 5821/5820/5810/415 Ink Tank) For HP Ink Tank 415, 410 , 315, 310, 115, 110 series (printheads can be changed individually). Also for HP DeskJet GT5820, GT5810 printers(printheads need to be changed in a pair) For HP DeskJet GT and HP Ink Tank printers, replacing damaged,worn-out or no longer functioning properly printheads is easy and hassle-free. M0H50A Tricolor M0H51A Black Print Head Cartridge For HP DESKJET GT 5820 AIO PRINTER HP DeskJet GT 5810 AiO Printer HP DeskJet GT 5810 All-in-One Printer HP DeskJet GT 5820 AiO Printer HP DeskJet GT 5820 All-in-One Printer HP DeskJet GT 5822 AiO Printer:BR-pt HP Ink Tank 110 Series HP Ink Tank 315 All-in-One Printer HP Ink Tank WL 410 All-in-One Printer HP Ink Tank WL 415 All-in-One Printer