Get accurate print results for important projects every time with these 29ml magenta ink cartridges. The pigment-based ink is resistant to fading, extreme temperatures and smudging, so prints are crisp and vibrant, even after long periods of time, and the cartridge installs seamlessly into compatible HP DesignJet printers?. These HP magenta ink cartridges have 29ml of ink each, reducing downtime and the need for maintenance