This SuppliesMAX Ultra High Yield Toner Cartridge is Designed to be Compatible with the Lexmark 56F1U00 and is Guaranteed to Match and Outlast the OEM Version ; Designed for use in the USA ; 25000 Page Yield on 5% Page Coverage Model: SuppliesMAX Lexmark 56F1U00 Ultra High Yield Toner Cartridge Color: Black Yield: 25000 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.