I bought this set out of the UK, thus it explains the sockets it contains. No metrics, but Whitworth, British Standard Face and Across Face. All the Whitworth-BSF sockets were present, was only missing two sockets and they were AF which is the same as SAE. I replaced them with Indestro sockets which are close in appearance. Not likely I would ever come across the missing sockets. As you can see, everything was in good condition, except the outside of the box which I repainted. In case you are not familiar with the differences in sizes, a 3/4" Whitworth = 1 1/2" SAE and a 7/8" BSF = the same 1 1/2" SAE, in fact they are the same socket. Oh well, go figure.