TonerDepot Compatible with Brother TN820, TN850 Toner Cartridge Multi-Fit Black Ink Box for Brother Laser Printers and Brother All in One Machine Up to 8000 pages high page yield (5% page coverage) Quality, steady and smooth printing with reasonable price Reduce unnecessary ink wastage and prevent damage to the printer Easy installation and usage. Instructions included in the package. 1 year product warranty for costumers rights and benefits Compatible with Brothers Laser printers and Brother all in one machine series. Please check your model below for best printing result