Compatible exclusively with a small number of Xerox ColorQube 8700 printers, the 108R00999 is a pack of 4 genuine black solid ink sticks. Replacing the need for traditional ink (or even toner) cartridges, the environmentally friendly Xerox 108R00999 pack leaves you with very little waste once the solid ink sticks have been used. Despite their small size, each of the 108R00999 solid ink sticks contained within this original Xerox pack offers an impressive 2,250 estimated page yield. The genuine Xerox 108R00999 pack not only offers you an unbeatable quality or ink and an assurance of quality, but the simplicity of the cartridges makes them environmentally friendly too!