Designed as part of an entire printing system to provide a superior degree of quality. Delicately balanced to provide even flow and toner distribution on the paper. Durable and easy to install. Ultra high-yield toner cartridge is perfect for efficient, high-volume printing in your Brother HL-L6400DW, HL-L6400DWT and MFC-L6900DW. Cartridge yields approximately 20,000 pages (based on approximate toner cartridge yields in accordance with ISO/IEC 19752 (letter/A4)). Always use Brother Genuine Toner for best results. Safeguard your investment with Brother Genuine intelligently-engineered and performance-tested toner.