The HP CF237X (37X) High Yield Black Toner Cartridge is a genuine original product made by HP specifically for use in their M608, M609, M631, mFP M632, and M633 printers. This high-yield toner cartridge offers a page output of up to 25000 pages, making it ideal for high-volume printing environments. With a weight of 5.96lbs, this toner cartridge is designed to provide consistent and reliable printing performance. As a trusted brand in printing technology, HP ensures that this product meets the highest standards of quality and compatibility for your printing needs.