This is a genuine HP 564 combo-pack ink cartridge, model N9H57FN, which includes black, tri-color, cyan, yellow, magenta, and multicolor cartridges. It is compatible with various HP printers, including DeskJet, Photosmart, and Officejet models, as well as other universal compatible models. The print technology used is inkjet. This combo-pack includes one pack of ink cartridges, and the item height is listed as 1 pack.