This black toner cartridge is designed for use with HP LaserJet 1160, 1320, 3390, and 3392 printers. It comes in a blue box and contains high-quality toner that produces sharp, clear text and images. The cartridge has a unit quantity of one and is ideal for those who need to print professional-quality documents.Please note that this product contains a chemical that is known to the State of California to cause cancer, as indicated by the California Prop 65 warning. However, rest assured that the product has been tested and certified by HP to ensure that it meets the highest quality standards. If you have any questions or concerns about this product, please feel free to contact us.