LxTek Drum Unit Replacements for DR820 DR 820 are strictly tested with industry quality control processes. Compatible Printers: compatible with Brother HL-L6200DW HL-L6200DWT HL-L5100DN HL-L5200DW HL-L5200DWT DCP-L5500DN MFC-L5700DW MFC-L5800DW MFC-L5900DW MFC-L6700DW MFC-L6800DW DCP-L5600DN HL-L6300DW DCP-L5650DN HL-L5000D MFC-L5850DW Printers. Package Contents: 2 Pack (2 Black) compatible with Brother DR820 DR-820 drum unit. Page Yield: Up to 30,000 pages per DR820 DR-820 drum unit at 5% coverage in accordance with ISO/IEC 19798 (Letter) * A4 is larger than Letter paper and therefore 5% will be more ink on the page on A4 vs letter. This Package is DR820 Drum Unit, NOT Toner Cartridge.