Lexmark 56F2U00 Black Ultra High Yield Return Program Toner Cartridge Consistently outstanding image quality. Long-life system reliability. Superior sustainability. Innovative shake-free print system. Key features Lexmark original toner Colour: Black Yield: High - Up to 25, 000 pages Compatibility: Selected Lexmark printers Pack size: 1 Compatibility Lexmark MX521de Lexmark MS521dn Lexmark MX521ade Lexmark MX622ade Lexmark MS621dn Lexmark MX522adhe Lexmark MS622de Lexmark MX622adhe