Lexmark 501H Black Return Program High-Yield Toner CartridgeUse the Lexmark 501H Black Return Program High Yield Toner Cartridges shake free system to create bold documents with crisp, accurate black lines. This black toner cartridge's Unison formulation provides every printout with consistent, high quality ink to ensure all of your documents look clean and professional. You can use this Lexmark high yield toner with any compatible Lexmark printer. Its impressive 5,000 page output makes this high yield toner