The ones I bought from Aliexpress is supposedly a Furutech knock of. At least it says Furutech on it, rhodium plated copper.
They will take any size cable. The only issue I had with them, is that the ground blade is about 1/8 inch too long, and that makes it more difficult, if not impossible to fully plug in to a receptacle.
My handy moto tool took care of that on all of them.