This Original Brother TN-320BK Black Toner Cartridge will provide high quality, hassle-free printing for the life of the Cartridge. Due to the Genuine TN320BK being a brand new unused product you can enjoy guaranteed compatibility with your Brother Printer, eliminating the need for reprints and increasing workflow. The Original Brother TN320BK is ideal for use in the home and small office environment as it has a healthy page yield of around 4,000 (based on a 5% coverage). The Genuine Brother TN 320BK Black Toner Cartridge is designed to be compatible with a wide range of Brother Printers. A full list of compatible Printers can be found on this page.