I recently aquired this tool. I just "know" that I have seem some reference to it being made in the 80's or 90's - I think. It would have been something I would not have paid much attention to back then. Now I have one and I an stumped.
Looks to be stainless steel construction, it is magnetic though. It takes standard 7/8-14 dies. The physical size is the same as a 310 tool. There are no markings at all. Build quality is excellent, very well made - but by whom?
Ken