Used them for well more years than I want to talk about. They survive our farms us, which is through them in a tool box, bounce them around on the machine, dig them out of the goo in the bottom of the box, use and throw them back in. Never pretty but that is not what we buy them for, anything pulled out of the machines boxes does not look like jewels after about 2 hours. We can turn alot of pretty tools into junk quickly. The Wright set I was using today is around 30 years old with that level of abuse for most of them.
They are biggest in the larger industrial sizes that is why the common 3/8 user may never hear of them.
Ours is for automotive areas - Cornwell
For the others areas general farm Wrights, C-Man Pro, CMan, SK
Large Industrial Sizes Wrights