The Original Brother DR-223CL Drum Unit includes 4 drum cartridges Black, Cyan, Magenta, and Yellow (18,000-page yield per unit).These Original Brother DR-223CL Drum Cartridges are designed to work with the following Brother printers:Brother HL-L3210CWBrother HL-L3230CDWBrother HL-L3270CDWBrother HL-L3290CDWBrother MFC-L3710CWBrother MFC-L3750CDWBrother MFC-L3770CDWGenuine Brother printers, toners, and drum units are engineered to work as a system to provide crisp text and vivid images!Bold and sharp text.Consistent performance.Higher page yield.High-quality printing.Professional graphics.Fast and reliable printing experience of the utmost quality.Safe for your printer.