This is a genuine black toner cartridge for Oki C8600. Its capacity is 6000 pages on A4 page format at 5% coverage.Compatible Printers: OKI C 8600 CDTN, OKI C 8600 N, OKI C 8800 N, OKI C 8600 DN, OKI C 8800 CDTN, OKI C 8800 DN, OKI C 8800 DTN, OKI C 8800 Series, OKI C 8600 DTN, OKI C 8600 Series