T series print cartridge is specifically designed to assure optimal print quality, with crisp, dark output from first print to last. This high-yield print cartridge comes with oiled fuser wipers for customers that do extensive label printing. The Lexmark T520, T522 print cartridges are designed to work with T520, T522, X520 and X522 Series Printers and will not work with other products. Cartridge yields approximately 20,000 pages. Lexmark Return Program Cartridges are sold at a discount, versus 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.