Belt unit is designed for use with Brother HL-4150CDN, HL-4570CDW, HL-4570CDWT, MFC-9460CDN, MFC-9560CDW and MFC-9970CDW. All genuine Brother printer supplies are designed as part of an entire printing system to provide a superior degree of quality. It yields approximately 50,000 pages on A4 or letter-size, single-sided pages.