Lexmark return program cartridge is print cartridges sold at a discount in exchange for the customer's agreement to the license requirement that the cartridges will be used only once & returned only to Lexmark for remanufacturing or recycling. Change cartridges less, save more per print, & reduce your environmental footprint. Outstanding results page after page, year after year. Superior Lexmark design means precision pairing between printer & cartridge for value, quality & environmental responsibility you can count on. Going green has never been easier. It's simple, smart & always free.