Somehow offering over twice as much ink as the standard capacity offering the Hewlett Packard F9K01A magenta ink cartridge is great for those who are serious about printing. Designed for professionals who produce artwork of all sizes, this HP 745 magenta ink cartridge offers prints that are as hard-wearing as they are beautiful.The 300ml of magenta ink that the Hewlett Packard F9K01A contains, is instrumental in the creation of fantastic quality prints from your Designjet series printer.