The transfer belt in your printer picks up toner from the cartridge and passes it across to the page surface for crisp text and graphics. Over time, wear and tear reduces the performance of the transfer belt, so Oki recommend replacing the transfer belt at regular intervals to ensure top performance and optimal print quality. This belt unit has a page yield of up to 60000. Replacement transfer belt for Oki printers Print yield: 60000 pages For use with C532 and MC573 printers Original Oki product