Can anyone help me identify the plug in the image?


Joined Jan 23, 2018
There are many makers of plugs and sockets of that general style and they are all just a bit different so that they do not mix. So locating a compatible connector will be quite a challenge. The standard internet sales organizations will be of no help at all, as you have discovered.So one choice will be to purchase two mating pairs from an electronic parts supplier, and create your own extension cable, and then cut the existing cable and install a mating pair in-line. That will allow the addition of whatever length you need and also allow a return to the original length.
One caution is that the attachment to the wires is usually a crimp connection and a challenge to do adequately without the correct crimping tool.