You want the best possible quality output from your device, so you will need this Genuine Brother DR-251CL Drum Unit. With Brother laser products the toner and drum work independently – this is cheaper to run than those where the two units are combined. If one runs out, you don't have to replace both items simultaneously, substantially reducing waste, saving precious resources and your cash. There are many factors that determine the actual drum life, such as temperature, humidity, type of paper, type of toner used, the number of pages per print job, etc., however your device will let you know when it is time for replacement. Ensure high-speed printing with brilliant colour quality by using original Brother consumables. No one makes better parts and supplies for Brother products than Brother themselves.