Buy your Original Brother DR-4000 Black Imaging Drum Unit (DR4000 Laser Printer OPC Imaging Drum) for the low price of £109 . The Original Brother DR-4000 Black Imaging Drum Unit will work in the following printers Brother HL-6050 , Brother HL-6050D , Brother HL-6050DN , Brother HL-6050DW it will give you a page yield of approx 30,000 pages @ 5% average coverage. The Original Brother DR-4000 Black Imaging Drum Unit offers you good value and excellent printing performance. Original Brother DR-4000 Black Imaging Drum Unit (DR4000 Laser Printer OPC Imaging Drum)