This is a set of two genuine HP 771a ink(1 LIGHT GRAY AND 1 LIGHT MAGENTA) cartridges in colors light cyan and light gray, compatible with HP Designjet printers Z6200, Z6600, and Z6800. The expiration date for both cartridges is between August and November 2022-2023. These cartridges are sold as a unit and are perfect for those looking for high-quality ink replacements for their printers. They are specifically designed to produce professional-grade prints that are both fade-resistant and long-lasting.