With these cartridges, you can replace the printer ink of your HP DeskJet. There are several ink cartridges that are suitable for an HP DeskJet. Each HP cartridge has a unique size and doesn't fit in every printer. Make sure to always check which HP DeskJet you have first. You can find the model on the front and back of your printer. This way, you always buy a cartridge that fits in your printer. There are regular cartridges or XL cartridges. Do you print a lot? Save money with an XL ink cartridge.