The Brother DR400 Black Drum Unit Cartridge is a new and sealed product designed for use with Brother printers. Specifically compatible with models such as HL-1030, HL-1230, MFC 970, and HL-1240, this drum unit ensures high-quality black printing through laser print technology. This unit, with model number Brother DR400, is ideal for those looking to maintain or replace their existing drum cartridge in their Brother printer, providing reliable and consistent results for various printing needs.