I have a little bag with a few parts in it and it says El Grande on it. There is a press fit type fitting that looks like its for the finial to screw into. So that means the finial must be the male part. I do not have a finial though. The closest tap I have that fits is M4x.7 but that is just a gnats hair tight. But the press part is a soft enough metal, like some sorta brass/nickle mix or something and the fit is so so close that I know if i was to chuck it in a collet I could get that tap to go in with very little effort, expanding the threading enough that I could then make a matching M4x.7 screw. The M4x.7 is a pretty standard tap and die set size. Whatever the true tap size is, is likely something darn close to that but off the standard just to mess with people like us.
