HP 302/304 cartridges fit in various HP DeskJet, HP OfficeJet, and HP ENVY printers. Have a printer from this series? Always check in the product text whether your printer is listed. These cartridges work in printers that use HP 302 cartridges or HP 304 cartridges. You can buy them as a combo pack or separately in black and color. The 302/304 ink cartridges are made of recycled plastic and are recyclable. You can send the empty cartridges to HP for free.