The HP 74 black + 75 tri-color Combo-pack is a genuine/original ink cartridge set designed for use with select HP printers such as Deskjet D4260, D4360, and Officejet J575, J5780 models. With a print technology of inkjet, this combo-pack includes both black and tri-color cartridges, perfect for a variety of printing needs. The cartridges are compatible with various HP printer models and have an expiration date of Oct. 2012. Ideal for those looking for reliable and high-quality printer ink options from HP.