Brother DR150CL Drum Cartridge for DCP-9040CN, MFC-9440CNThis Brother DR 150 Drum Unit can be used to replace the previous drum unit in your laser printer. It's designed to transfer images from the laser to the paper, providing you with high quality printouts. It is long lasting so you won't have to maintain your printer as frequently. When used with a toner cartridge, it has an estimated page yield of 17,000 pages. It's compatible for use with the following Brother machines: DCP 9040CN, HL 4040CN, 4050CDN