Simple and well-made, its shape allows for placement in certain sockets with "unfortunate" dimensions. Minus one star because although it is quite tight and makes good contact, it is not enough when you remove it from the socket - you have to hold it, otherwise you get the American one and it stays inside. I put double-sided tape on it to keep it in place.

Perfect...small size, quality construction, and stays securely on the American outlet, like it's integrated!