ProPrint Compatible Brother TN850 (TN850 TN820) High Yield Black Toner Cartridge LIFE TIME WARRANTY - 100% Quality Guarantee for the life of the cartridge. Best Warranty in the Industry ProPrint Compatible Brother TN-850 Black Toner Cartridges are High Quality OEM Replacement Cartridges That Provide Up to 60% Savings Compared to the OEM Page Yield: 8,000 Page Black based on 5% Coverage (letter/A4) Works with Brother DR820 Drum Unit (sold separately) Compatible with Brother HL-L5100dn, HL-L5200dw, HL-L5200dwt, HL-L6200dw, HL-L6200dwt, HL-L6300dw, DCP-L5600dn, DCP-L5650dN, MFC-L5700dw, MFC-L5850dw, MFC-L5900dw, MFC-L6700dw, MFC-L6800dw