This genuine replacement TN821XLBK black high yield toner cartridge, is design to produce crisp clear print outs, time and time again. Compatible with a range of printers, our easy to install cartridges will help you produce long-lasting documents that won’t smudge or fade over time. Brother consider the environmental impact at every stage of your toner cartridge life cycle, reducing waste at landfill. All our hardware and toner cartridges are built to have as little impact on the environment as possible. Genuine Brother TN821XLBK Laser toner cartridge - worth it every time.