51B1X00 Unison Extra High-Yield Toner, 20,000 Page-Yield, Black

• Unison™ toner: Essential to Lexmark print system performance, Unison™ toner's unique formulation consistently delivers outstanding image quality, ensures long-life print system reliability and promotes superior sustainability —all in an innovative shake-free print system.
• Best together: Genuine Lexmark supplies are engineered to work best together with your Lexmark printer, delivering excellent print quality from the first page to the last.
• Lexmark Cartridge Collection Program.
• Lexmark Return Program Cartridges.