This SuppliesMAX Extra High Yield Toner Cartridge is Designed to be Compatible with the Lexmark 56F1X00 and is Guaranteed to Match and Outlast the OEM Version ; Designed for use in the USA ; 20000 Page Yield on 5% Page Coverage Model: SuppliesMAX Lexmark 56F1X00 Extra High Yield Toner Cartridge Color: Black Yield: 20000 Machine Compatibility: See overview tab Manufacturer Warranty: 30 DAYS Our compatible toner, inkjet cartridges, ribbons, copier and other supplies are constructed to original OEM specifications. Guaranteed Superior Quality to Meet or Exceed High Priced OEM Products. Product packing may vary but it will not affect quality and warranty.