HLL2310/DCPL2510/MFCL2710 DRUM UNITThe Brother DR2400 Drum Unit replaces and refreshes the laser printing assembly at the heart of your Brother laser printer, giving you continued crisp output that looks good as new. Because Brother printers feature a separate toner cartridge and drum unit, your print costs are lowered you need only replace the drum unit when necessary. Designed for use for up to 12,000 pages.