MODEL- 64015SA VENDOR- LEXMARK FEATURES- T64x Return Print Cartridge Lexmark T640, T642 and T644 supplies are designed for the highest quality output, easy customer installation and quality performance. Lexmark T640, T642 and T644 supplies are not compatible with other Lexmark Printers. Average Cartridge Yield 6,000 standard pages. Declared yield value in accordance with ISO/IE