I picked this socket, or adapter up, and don't know exactly which one it is? It has a Snap-on logo, with an "O" just to the right of it. Then below this, is a part number of -734-1&1/16", which is probably missing the first number. One end is 1" square, which I pesume is the drive size, and the other is 1&1/16" square, which I have questions as to what it fits. I cannot find anything on it on AA or google. Is it a socket, or an adapter? What is the vintage? Any help much appreciated.
Thanks,
Wayne