Enjoy high quality photos and graphics from this hp 72 grey ink cartridge it39s just one of the inks required in your hp designjet large format printer that produces high volume printing from the 130ml cartridge so that you can be assured of professional quality diagrams prints and posters it also includes supply management features that allow you to reorder cartridges automatically and it accurately informs you how much ink is left because it39s a genuine hp product it works flaw