Original HP inkThe HP 301 Black Ink Cartridge offers crisp greyscale images and sharp black text that resists fading, so will last for decades.These easy-to-use cartridges even let you finish printing a critical job when you're low on a specific ink.HP Instant InkSave up to 70% on ink with HP's Instant Ink service. When your printer is running low, it automatically orders more ink cartridges, so you don't have to order them yourself.The service works on how many pages you print, not how much ink you use. You can choose from a range of monthly page plans, and unused pages roll over to the next month. The price includes ink, shipping and cartridge recycling.Compatible printers: - HP DeskJet 1000 series - HP DeskJet 1500 series - HP DeskJet 2000 series - HP DeskJet 2500 series - HP DeskJet 3000 series - HP ENVY 4500 series - HP ENVY 5500 series - HP OfficeJet 2600 series - HP OfficeJet 4600 series