The Brother TN-331BK Toner Cartridge in black is a genuine/original product specifically designed for Brother printers. This laser print technology cartridge is compatible with models such as the Brother MFC-J5320DW and LC51. It comes sealed in a new box, ensuring quality and reliability for all your printing needs. With the Brother brand reputation and compatibility with a variety of Brother printers, this TN-331BK cartridge provides crisp and professional-quality black prints every time.