Stanley is the OEM supplier for Husky and used to be the OEM for Craftsman. The selection is limited to the basics but you'll find your 3/8" sockets and combination wrenches. They also sell impact sockets near the air tools in the auto section.
I wouldn't touch anything in Walmart other than Stanley. Everything else is Chinese junk that will break the first time you use it. Same thing goes for Harbor Freight.