The Craftsman CM HEX KEY Metric 11 Piece Ball End Set is an excellent addition to your toolbox. It has nearly every size metric "Allen" type wrench you will ever need. The plastic holder is unbreakable and extremely functional. The ball ends are a lifesaver when trying to access cramped fasteners. Oh, and American Made!!
I have been buying tools from Sears for years because most of them where made in the US. My old set of allen wrenches cleary said made in the USA. Now hidden on the label it says made in china. When I look at the package I can tell there cheaper. The wrenches have a dull finish to them and dont seem to last as long.