My brother bought a 3/8" impact socket set; we use them all the time, they work fine and according to our dealer... have a lifetime warranty (just like the traditional Matco USA hardline). These were morn affordable then a USA made equivalent. These are asian imports, however; I have a sneaking suspicion, they maybe sunex or one of the many importers out there. I'm sure someone here can confirm who the OEM is; all I can tell you is about these impacts... they are working fine with what seems to be little or no wear at this point... good luck!