Product Detail :
1 Black, 1 Cyan, 1 Magenta, 1 Yellow Empty refillable cartridge with the cartridge chips.
This HP 940 refillable cartridge works with multiple HP printer models:
* Officejet Pro 8500 series......
* Officejet Pro 8500 All-in-one series........
* Officejet Pro 8500a All-in-one series......
These empty refillable are easy to fill with syringe. The ink levels are clearly visible when refiling the cartridge. There is no any special skill are needed to refill those cartridges.
These refillable cartridge with auto reset chips. The same cartridge can be refill again and again! All you have to do is to refill the cartridge with the syringe!
When ink running low, you can refill the cartridge by remove the rubber plug on the top of the cartridge, inject the ink until the cartridge is full, then put rubber plug back to the cartridge, install the cartridge to the printer and ready to print.