#2 The sockets here in Germany have built-in claws, the socket into the opening, the screws for the claws tighten and the socket then claws into the opening from the inside
"A 10-foot-tall, 5-ton moai replica "walks" as three teams maneuver strong ropes. Archaeologists led the experiment to test their theory about how the ancient Easter Island statues moved."
#2 The sockets here in Germany have built-in claws, the socket into the opening, the screws for the claws tighten and the socket then claws into the opening from the inside
Just... like in every country in Europe.
The socket in the video is unnecessary overengenered.
not in Spain, I need this
its called retrofit, or retrofitting kit - allows you to deploy modern equipment in preexisting conditions without damaging infrastructure.