LxTek Compatible Toner Cartridge Replacement Set For TN850 TN820, 5 Black LxTek compatible toner cartridge replacements for 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: 5 Pack (5 Black) compatible TN850 toner cartridges Guarantee: 1-year limited warranty / Shelf life: 18-24 months