The original transfer unit BU-229CL is essential if you want to extend the lifespan of your printer and ensure it consistently produces high-quality documents. The BU-229CL ensures that the toner in your laser printer is transferred flawlessly, so your texts and images are printed clearly and sharply. It can be installed quickly and easily, significantly contributing to your printer delivering the professional results you expect from Brother. This replacement transfer unit has a capacity of 50,000 pages, is durable and reliable, and makes maintaining your printer easier.