Make a professional impression by using a genuine Lexmark toner cartridge. Superior Lexmark design means precision pairing between printer and cartridge for value, quality and environmental responsibility you can count on. Toner delivers outstanding results page after page, year after year, in Lexmark X264DN, X363DN and X364DN/DW. Lexmark Return Program Cartridges are sold at a discount, vs. the prices of regular cartridges, in exchange for the customer's agreement to use the cartridge only once and return it only to Lexmark for remanufacturing or recycling. Cartridge yields approximately 3,500 pages.