At first, I'd like to show you the difference between two model DX5 printhead for Epson printer:

 DX5 locked printhead could used for A2 format printer, cheap price.

DX5 unlocked printhead could used for A3 and A4 printer, expensive prive.

Now our chip decoder have been produced to solve this problem:

DX5 First Locked printhead + our chip decoder = DX5 unlocked printhead

SHIPPING: we ship the item by DHL\FEDEX to worldwide , very fast !