LxTeK Compatible Toner Cartridge Replacement for TN850 TN820 (3 Black), High yeild LxTek compatible toner cartridge replacements for Bother TN850 have been awarded ISO9001 certification, and we have independent laboratories periodically verify product quality to ensure a smooth user experience. Page Yield: 8,000 pages per black toner cartridge at 5% coverage Compatible Printers: Brother MFC Series Printers: MFCL5700DW MFCL5800DW MFCL5850DW MFCL5900DW MFCL6700DW MFCL6750DW MFCL6800DW MFCL6900DW; Brother HL Series Printers: HLL6200DWT HLL5200DWT HLL6400DWT HLL6200DW HLL5200DW HLL6250DW HLL6300DW HLL6400DW HLL5000D HLL5100DN; Brother DCP Series Printers: DCPL5500DN DCPL5650DN DCPL5600DN Package Contents: 3 Pack (3 Black) compatible Brother TN850 toner cartridge Guarantee: 1-year limited warranty / Shelf life: 18-24 months