Do it Wiser Compatible High Yield Toner Cartridge for Oki C5500 C5500N C5500DN C5800 C5800N C5800DLN C5900 C5900N Okidata Black Compatible with part number: 43324401 Included: x1 Black 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: Black: 5000 pages (depends on printer and usage)