Original HP inkThe HP 301 Black & Tri-colour Ink Cartridges produce effortless laser-quality printing. Be impressed by the vivid colours, graphics and images created with the HP inks.The 301 Cartridges give you enhanced image quality, with the ColorLok symbol meaning your prints don't fade over time. The ink-level gauge lets you see when the ink is running low, so you can prioritise print jobs.The cartridges are not only user-friendly, but also economical.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