Toner cartridge is designed for use with Brother DCP-8040, DCP-8045D; HL-5140, HL-5150D, HL-5150DLT, HL-5170DN, HL-5170DLT; MFC-8120, MFC-8220, MFC-8440, MFC-8640D, MFC-8840D and MFC-8840DN. All genuine Brother printer supplies are designed as part of an entire printing system to provide a superior degree of quality. Genuine Brother toner is delicately balanced to provide even flow and toner distribution. Cartridge yields approximately 6,700 pages at 5 percent coverage on letter-size paper.