Renewable Toner Compatible High Yield Toner Cartridge Replacement for HP 11X Q6511X Laserjet 2420 2430 LOW COST, HIGH VALUE. RT replacement for HP 11X toner. Printing cost is as low as .007 cents per page, up to 60% less than HP Q6511X original toner cartridges. QTY: 1-Pack (1 Black) RT Compatible HP Q6511X toner cartridge OEM Part #: HP 11X / Q6511X | High Yield: 12k standard pages at 5% coverage For use in HP LaserJet Printers: 2420 / 2420d / 2420dn / 2430 / 2430n / 2430t / 2430tn / 2430dtn LIFETIME WARRANTY: we always honor our warranty, even if the Amazon return window has closed