When it comes to office printing, you can rely on Brother's DR-421CL Drum Unit Pack to ensure your printer remains in perfect working order and your printouts stay crystal clear.¦Though it can be tempting to buy less expensive, non-branded supplies, you should remember that installing cheap drum units in your Brother laser printer can not only affect the quality of your prints but void your warranty and cause long-term damage to your machine.¦This genuine DR-421CL Drum Unit Pack keeps your printer performing just as it should, providing you with better value for money in the long run and impressive results, every time.