DR-3425 Premium Generic Drum Unit Brother DR3425 DrumBROTHER #DR 3425 ORIGINAL DRUM UNIT 50000 PAGES When needing to buy a New Brother DR 3425 Drum unit to suit these Brother HL L5100DN, HL L5200DW, HL L6200DW, HL L6400DW, MFC L5755DW, MFC L6700DW and MFC L6900D Laser printers and Multi Function Devices. Thisgenuine drum unit form Brother is the photoconductor part in the printer that actually creates the image from the toner supplied by the toner cartridge. It is therefore critical that it is replaced