OKI have made the wise decision to give the 45536416 black toner cartridge (and the other three colours in the range) a high 24,000 page estimated yield. This means lucky owners of compatible printers, like the Oki C911dn, can enjoys long periods without cartridge changing and a low operating cost.As this top-quality 45536416 black  has been produced entirely by OKI themselves, it produces the best prints available for your machine. If there should be any issues at all, OKI guarantee the 45536416 themselves and offer a full warranty directly.