Our Brother Compatible TN-560 Laser Toner Cartridge and Brother Compatible DR-500 Drum Cartridge for the Brother MFC-8420 are designed to meet, or exceed your expectations of the Genuine Brother name-brand product at a fraction of the price. Our Brother MFC-8420 Compatible Cartridges are designed to give you optimal print quality, with longer than normal page yields. Purchasing our combo pack of Brother compatible TN-560 Toner Cartridges offers you the greatest value in comparison to the Brother OEM Brand. We suggest that the MFC- 8420 Drum (DR-500) is replaced one time for every three Toners (TN-560) used. 90 Day Money Back Guarantee on every product.