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-L3210CW Brother HL-L3230CDW Brother HL-L3270CDW Brother HL-L3290CDW Brother MFC-L3710CW Brother MFC-L3750CDW Brother 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.