Do it Wiser &Acirc; Compatible Toner Cartridge For Oki Okidata C9600 C9600HDN C9600N C9650HDN C9650N C9800HDN C9800HN C9800MFP Type C7 - 42918904 - 18500 Pages - Black Compatible with part number: 42918904 Compatible printer models: Oki Okidata C9600 C9600HDN C9600N C9650HDN C9650N C9800HDN C9800HN C9800MFP Type C7 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 Each Black cartridge has a capacity of 18,500 pages at 5% coverage (depends on printer and usage)