Print vivid colour photos and make sure that all of your documents look great with the HP 304 Tri-colour Ink Cartridge. Built and tested to deliver crisp text and vivid colours, the HP 304 Cartridge is compatible with the HP DeskJet 3720 and 3730. Able to print 100 pages, you can get through all your work with reliable and consistent results. And when the cartridge is finished, you can recycle it for free with HP Planet Partners.