Cup Holder for Tesla Model S

I designed this cup holder for Tesla Model S. The diameter of the ring is 80mm. It need a 2 mm pin to assemble it. You can find any around 2 mm small steel pin. you can cut a piece of wire or a big paper clip. Please download stl file for all parts of this model. If you directly open the file with Banbu, it will missing a hanger to print. It was a mistake to upload initially. But it won't allow me to correct it.