The use of Brother Genuine replacement toner cartridges like the TN-820 not only produces sharp, black and white pages with the quality you expect from Brother products – it also increases productivity and can reduce downtime when fulfilled through Amazon Dash Replenishment. The Brother TN-820 replacement laser black toner cartridge is for use with 21 Brother products. This professional cartridge is intelligently engineered to work in seamless unison without compromising the quality of the print.