Page Yield: 8000 pages for Brother TN850 High Yield Black toners (per cartridge) & 30,000 pages for Brother DR820 Drum unit (per drum) Based On 5% Standard Coverage Package Contents: 2 x Brother TN850 TN-850 TN 850 High Yield Black Toner Cartridges 1 x Brother DR820 DR-820 DR 820 Black Drum Compatible with Brother DCP-L5500DN, DCP-L5600DN, DCP-L5650DN, DCP-L6600DW, HL-L500, HL-L6400DW, HL-L6400DWG, HL-L6400DWT, MFC-L5700DN, MFC-L5700DW, MFC-L5750DW Product name: Brother TN850 TN-850 TN 850 High Yield Black Toner Cartridges replacements for Brother TN850 HY Black toner & Brother DR820 DR-820 DR 820 Drum replacement for Brother DR820 drum Reliable printing Quality: LD Products Brother TN850 HY toner cartridge and DR820 drum replacements have excellent printing performance, both pictures and text will be very clear, vibrant and vivid.