Ink cartridge, black. The HP 738 ink cartridge in black, with a capacity of 300 ml, is an essential accessory for your DesignJet printer. The original cartridge ensures reliable performance and delivers sharp, professional prints. Its high capacity makes it ideal for use in business environments where continuous printing is required. Rely on HP's proven quality to achieve brilliant prints and enhance your productivity. Get the most out of your DesignJet printer with the original HP 738 ink cartridge in black, which guarantees top-notch results.