- Provides superb print quality for up to 18,000 A4 pages - One-piece toner/drum consumableCompatible Printers: OKI MB 770 dnv fax, OKI MB 770 dnv, OKI MB 770 dfnv, OKI MB 770 dfn fax, OKI MB 770 fx, OKI MB 770, OKI B 731 DNW, OKI MB 760, OKI MB 760 dn Fax, OKI MB 770 dn fax, OKI MB 770 dn, OKI MB 770 f, OKI B 721 DN, OKI B 731 DN, OKI MB 770 plus