No clue, but reading "fully hardened" made me laugh.
I need a day off.![]()
If it is it should shatter easily.
My Grandpa had one like that, but the handle was maroon color, same style. No name and made in Israel. Tough old screwdriver, don't think I would rush out a buy a set, but is at least 25 years old and many were hard years, never failed. If you paid 50 cents for it, not bad.
Sorry, but it is a "chinese" piece of **** that I wouldn't stir **** with.
But then, to each is own,,,,