1 Pack Black V4ink DR720 Compatible Drum Unit. Print more and Cost less: 30,000 Pages per Drum based on 5% Coverage (letter/A4). Suitable for Printer: Brother HL-5440DN 5445D 5450DN 5470DW 5470DWT, Brother HL-6180DW 6180DWT, Brother DCP-8110DN 8150DN 8155DN 8250DN, Brother MFC-8510DN 8515DN 8520DN 8710DW 8910DW 8950DW 8950DWT Printer. Reliable Printing Results: Sharp Text, Bold Blacks and Crisp Graphics. Perfect Partner with Your Printer. Easy to be Installed and Recognized.