The product is a set of four genuine Xerox 108R00930 black solid color Qube ink cartridges designed for use with Xerox printers 8570 and 8580. These ink cartridges are specifically formulated for inkjet print technology and are authentic/original Xerox products, ensuring high-quality printing results. The black color of the cartridges makes them ideal for producing professional-looking documents and images with crisp, sharp text and deep, rich colors. This product is a reliable and efficient choice for those in need of high-quality printing supplies for their Xerox printers.