Our refillable cartridges allow you to easily refill your HP Officejet Pro X451, X476, X551 or X576 printer. refilling InkPot's refillable cartridges is easy: 1- Remove the plug. 2- Inject the ink. 3- Replace the plug. Done!

The black cartridge can hold 240ml of ink. Each colour cartridge can hold 105ml.

These cartridges have permanent chips that never need to be replaced. Note that with this type of chip, the ink level will not be indicated by the printer. However, this is not a problem because the cartridges are transparent so you always know the actual levels of the cartridges. The printer will not refuse to print so long as there really is ink in the cartridges.

*IMPORTANT* The cartridges provided with this product are empty. You will also need to purchase an inkjet refill kit for HP 970/971.

This product contains the following:

• Black refillable cartridge for 970/970XL
• Cyan refillable cartridge for 971/971XL
• Magenta refillable cartridge for 971/971XL
• Yellow refillable cartridge for 971/971XL
• Easy and detailed instructions