These cartridges are designed for:
Repairing Epson printers by delivering PiezoFlush fluid to the internal ink system
Repairing Epson ink cartridges by providing a vessel to use the ink that is trapped in an Epson cart with a defective chip or a chip that reads empty when the cart still contains ink
For use with an alternative choice of inks such as our Piezography, ConeColor, and InkThrift ink systems
Or for reasons of your own!