Do it Wiser E525W Compatible for Dell E525W E525 525 Black Toner Cartridge Replacement for Dell E525W Printer for Dell 593-BBJX - 2 Pack Compatible with Part Number: 593-BBJX Included x2 Black compatible toner cartridge Our Do it Wiser smart toner cartridges are covered by a 1 year warranty against defects Cartridges certified to work | ISO 9001 quality assurance | ISO 14001 environmental management | RoHS Lead Free Estimated page yield: 2000 pages each (depends on printer and usage)