- Replacement fuser, transcription roller and paper feed rollers - 200,000 pagesCompatible Printers: OKI MB 770 dfn fax, OKI MB 770 dnv fax, OKI MB 770 dnv, OKI MB 770 dfnv, OKI MB 760, OKI B 731 DN, OKI MB 770 fx, OKI MB 770 f, OKI B 731 DNW, OKI MB 770, OKI B 721 DN, OKI MB 760 dn Fax, OKI MB 770 dn fax, OKI MB 770 dn, OKI MB 770 plus