The Brother TN-310BK Black Toner Cartridge is a genuine, original product made in Japan, specifically designed for use with various Brother printer models such as HL-4570CDW, DCP-9055CDN, and HL-4150CDN. This black toner cartridge is compatible with these printers and is sealed in a new bag, ensuring freshness and quality. With a unit quantity of 1, this laser print technology cartridge is a reliable and high-quality choice for producing crisp and professional-looking black prints on your Brother printer.