I know that 3D printers exist, and are in use making individual parts. I very much doubt that they are able, in a single operation, to make a system of multi-colored, interconnected moving parts, as shown. I could be wrong, but I'm skeptical.
What fuels my skepticism is that they portrayed, in the video (source is implied to be National Geographic
, but that could be faked) that they were "printing" an exact copy of the wrench. Ok, I can accept that they would tweak the scan files for effective forming in plastic, which might explain the thread-pitch of the adjustment nut. However, there would be no reason for them to change the profile of the handle, nor the hanging loop on the end. The plastic wrench has no more basis in the metal wrench than a ham sandwich has in a hamburger.