Set of 4 Color of Drum Unit: DR223/DR223CL Black Imaging Drum Unit x 1DR223/DR223CL Cyan Imaging Drum Unit x 1DR223/DR223CL Magenta Imaging Drum Unit x 1DR223/DR223CL Yellow Imaging Drum Unit x 1 Page Yield: Print up to 18,500 pages per Drum Unit at 5% coverage on letter/a4 Replacement for These Toner Cartridges: DR-223 DR-223CL Black Cyan Magenta Yellow Imaging Drum Unit Compatible with These Printers: Brother DCP-L3510CDW DCP-L3550CDW PrinterBrother HL-L3210CW HL-L3230CDN HL-L3230CDW HL-L3270CDW HL-L3290CDW PrinterBrother MFC-L3710CDW MFC-L3710CW MFC-L3730CDW MFC-L3750CDW MFC-L3770CDW Printer