(non-genuine)  4 PK Empty Refillable Ink Cartridge with one-time-use chip for Epson WF-7840 WF-7820 WF-7310 EC-C7000 printer 

4 PCS Empty refillable ink cartridge with one-time-use chip:

1 X T812 XL Black
1 X T812 XL Cyan
1 X T812 XL Magenta
1 X T812 XL Yellow


1 refilling instruction



We offer 30 day Full Warranty and 6 months Parts Warranty.
Most issues can easily be solved by contacting us and troubleshooting. We offer Technical Support for ALL of our customers regardless of the length of purchase.