Bring home reliable performance for practically any project. The Original HP 304 Black Ink Cartridge is specially designed to work with your printer to consistently deliver standout results ? throughout the life of your cartridge. Experience printing the way you expect ? and avoid wasting money. Original HP Ink Cartridges deliver pages you can use without worrying about performance. Choose optional high-yield cartridges to get a better value for frequent printing. Make an impact ? get vivid colour documents and lab-quality photos. Original HP inks resist water and last for decades so your prints maintain an eye-catching look over time. Compatible with HP DESKJET 3720 Series, 3730 Series.