Medium build quality. Ceramic inserts are very nice, but spacer in the middle between live and neutral is a piece of plastic of 2 or 3mm thick. Also the socket plugs (not brass or copper I think?) are riveted to the brass, but one of the rivets in my case is not done as well as it should. I think the EU standard is to weld these connections (not solder, actual welding). It is a working socket, but I highly doubt the 16A rating. I won't plug high power things in it. So if you need a 1 to 4 adapter for low power loads, no problem.
Perfekt as requested.