This combo ink cartridge is a perfect fit for your HP printer and is made by the original equipment manufacturer (OEM). The cartridge comes with a black HP 21 and a tri-color HP 22 ink. It is compatible with HP printers and uses the inkjet print technology. The cartridge is designed to provide high-quality prints with vibrant colors and sharp text. The HP 21 black ink cartridge yields up to 190 pages, while the HP 22 tri-color ink cartridge yields up to 165 pages. This combo pack is an excellent choice for your printing needs, whether at home or the office.