Remanufactured Brother imaging drums, like this DR421CL, take the four colour toner powders directly from the toner cartridge and are tasked with distributing it evenly. Your Brother laser printer then fuses the powder to paper, resulting is top quality results.With the same 30,000 page estimated yield, our remanufactured alternative to the Brother DR421CL maintains much of what was great about the original. Each of our remanufactured Brother DR421CL image drums comes with a 100% satisfaction guarantee, allowing you to focus on what really matters.