This Brother DR-400 Black Drum Unit is a compatible replacement for select Brother printers and fax machines. It is designed to produce crisp and clear prints, and is perfect for use in both home and office settings. The drum unit is easy to install and will work seamlessly with your printer or fax machine.With a page yield of up to 20,000 pages, this drum unit will last you for a long time. It is compatible with a range of Brother models, including the HL-1230, HL-1450, FAX-4750(e), and many more. This Brother DR-400 Black Drum Unit is an affordable and reliable replacement for your printer or fax machine, and will ensure that your documents look professional and presentable every time.