The HP 305 inkjet cartridge is filled with black toner. The capacity of the set is enough to create about 120 A4 pages. This capacity makes it suitable for home use when the volume of documents and images is small. In this case, as part of MFP brand HP DeskJet series models 2320, 2710, 2720, 4120, the product provides printing at the level of professional. It is made with the highest quality materials and repeatedly tested. Replacing the HP 305 component is easy on your own.