I was in AutoZone today. I noticed that they are selling a 2 piece "Quadbox" wrench set under their Duralast brand. The two wrenches are also made in Taiwan like the Gearwrench Quadbox wrenches.
However, the sizes included on the Duralast 2 wrenches are slightly different than on the Gearwrench versions. Here are the sizes on the Duralast wrenches:
8mm x 10mm, 12mm x 13mm, 14mm x 17mm, 18mm x 19mm.
The Craftsman and Gearwrench 2 piece wrench sets include the following sizes:
8mm x 10mm, 12mm x 13mm, 16mm x 17mm, 18mm x 19mm.
Dave