The product is a set of four Genuine HP 56 C6656A Black Ink Cartridges. These cartridges are sealed and compatible with HP printers, specifically the HP 56 model. The cartridges have an expiration date of March 2015, making them suitable for use within that time frame. Known for their quality and reliability, these original HP cartridges ensure crisp and professional-looking black prints for your documents and images. Ideal for anyone in need of reliable ink cartridges for their HP printer.