Renewable Toner Compatible Toner Cartridge High Yield Replacement for Lexmark 501X 50F1X00 for use in MS410 MS415 MS510 MS610 LOW COST, HIGH VALUE. RT replacement for Lexmark 501X black toner. Printing cost is as low as .005 cents per page, up to 60% less than Lexmark 50F1X00 original toner cartridges. QTY: 1 (1 black) Replaces OEM #: Lexmark 501X / Lexmark 50F1X00 High Yield: Up to 10k pages based on 5% coverage For use in Lexmark MS410d MS410dn MS415dn MS510dn MS610de MS610dn MS610dte MS610dtn LIFETIME WARRANTY: we always honor our warranty, even if the Amazon return window has closed