Replacement drum is designed for use in Brother DCP-7030, DCP-7040; HL-2140, HL-2170W; MFC-7340, MFC-7345N, MFC-7440N and MFC-7840W. It is part of a complete intelligent printing system to provide superior quality. Use only Brother Genuine replacement cartridges for superior results. Cartridge yields approximately 12,000 pages.