Quick excerpt from wiki:
"Sears has never manufactured Craftsman products itself, instead relying on other manufacturers to make the products for them and then apply the Craftsman brand name. Sometimes, the Craftsman branded items include exclusive features or functions that separate them from the manufacturer's own brand or other brands that that manufacturer produces. Other times, Craftsman products are identical to models of other brands with a different name on them. Beginning in 2010, hand tools manufactured for Craftsman by Apex Tool Group such as ratchets, sockets, and wrenches began being produced overseas (mainly in China although some are produced in Taiwan), while tools produced for Craftsman by Western Forge such as adjustable wrenches, screwdrivers, pliers and larger mechanic tool sets remain made in the United States. Sears still has an Industrial line which is sold through various authorized distributors and these tools are US made. They appear identical to their previous non-industrial US made counterparts, save for the "Industrial" name stamped on them. They are manufactured by Apex on the US production lines that made the previous US made product before production switched overseas to Asia. Tool storage has typically been manufactured by Waterloo Industries, while air compressors were manufatctured by DeVilbiss Air Power (part of Dewalt), and formerly by Campbell Hausfeld."