When designing a monochromatic laser printer, Brother always have the corresponding toner cartridges on their mind and have been present at every step in producing this TN2420. As Brother are both the manufacturer of your printer and this TN2420 toner cartridge, you can be sure of the two working absolutely perfectly together for the life of the toner.With a high page yield of 3,000 estimated pages, the genuine Brother TN2420 works out surprisingly cost effective, making the running of your printer affordable too. When purchasing an original Brother product, like the TN2420 toner cartridge, you are also in great hands, as they fully guarantee the product directly.