We should get the same result as in the picture below:
The already applied Rectangle Tool (U) may be helpful this time in representing a small stripe positioned on the central part of the circles:
Apply the here presented Blending Options:
We'll get in this case a metallic element:
Next we have to select one more time the Custom Shape Tool (U) - Circle Thin Frame for representing the ring:
Make use of the Blending Options shown in these tables:
We'll get a metallic ring this time as we have seen in the case of previous element:
Next step includes creating metallic supports for our elements which may be drawn with the Ellipse Tool (U) too.
Be attentive with the Blending Options:
Make a copy of the new small sphere and insert it on the opposite side.
Make one more circle with the Ellipse Tool (U):
Make use of the Blending Options presented on the tables below:
We'll get a kind of sphere like this one from the picture:
Next we shall draw one more circle:
Apply also the Blending Options:
Next we'll introduce in our picture one more circle:
The result should be as the next one:
Make a copy of the circle and try to make it smaller:
Next step includes choosing again the Custom Shape Tool (U) - Circle Thin Frame and representing a ring. After that we'll select the Rectangle Tool (U) and press on the Alt button to cut out several vertical and horizontal stripes.
You have the Blending Options in these tables:
You must get the same result as in the picture below:
More Tutorials: 
