[Jacques Reed]

Hi Mariano,

The saddle rotates in the upper tube. The tube does not turn.

There is a large round head rivet that holds the saddle to the tube. it is free to rotate also in the tube and the saddle. Without pulling mine apart I am not sure how the rivet is attached to the upper tube. The saddle rotates in that collar at the top of the tube. That is the ring you refer to in photo. It is part of the upper tube.

Again, I am only referring to the smaller jack but in the photos they seem the same at the saddle area for both size jacks.

Hope this helps.

Cheers,