Little Cube

This is the only tool that you will ever need for all HP's little cube integrated cartridges. First, let's make sure you have the correct cartridge: 1) Your cartridge looks similar to these: (picture). 2) Measure from top to bottom, the height is about 5 cm. 3) Congratulations. The tool works for you. Click the link below to get it. There are more instructions in the product details.
How to put ink in
If you tear off the label, you will see large holes. There is no need to drill. You can squirt ink into the hole and then use the priming tool to suck ink from the bottom.
How to print
After the refill, the printer will not recognize the new ink level. You will need to keep printing until the printer says, "Ink depleted. Do you want to keep using this cartridge?" Click "Yes" or "OK," and the printer will turn off the ink monitoring and let you print forever.

If you are new to refills, please visit this blog: (lhttps://www.bchtechnologies.com/blog/10-step-beginner-s-guide-to-refill-hp-integrated-cartridges-21-56-74-60-61-62-63-64-65).