T64x High Yield Return Program Print Cartridge for Label Applications (21K) - 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. Regular cartridges without this license/agreement sold at regular prices are also available. Regular cartridges are also recyclable at no cost through Lexmark Cartridge Collection Program. Lexmark T640, T642 and T644 supplies are designed for the highest quality output and are designed for easy customer installation and quality performance, from the first page to the last. Lexmark T640, T642 and T644 supplies are not compatible with other Lexmark Printers. This print cartridge comes with oiled fuser wipers for customers that do extensive label printing. True: Accurate technology. Genuine quality. Environmental focus. It's our nature. Image: Crisp print. Professional documents. Great Impressions. Project your character. Always: Dependable. Page after page. Year after year. Count on Lexmark.