MTI PRO Okidata 43979001 (DRB410) Compatible Laser Imaging Drum Unit for Okidata Printers: B410, B420, B430, B440 Series If you do not receive your product in an MTI-branded box, it is not a genuine MTI product. Let Amazon know. Compatible Printers: Okidata B410, B410dn, B420, B430, B440, MB460, MB470, MB480 Yield: 25,000 Pages at 5% Coverage Replaces OEM Part #s: Oki 43979005 / 43979002 / 43979001