Back on TrackAgility Weave Poles Adjustable 6 Pole Set with Carrying Case and Grass Stakes

I've never purchased weave poles, do these pull out all the way straight too?

Do the short supporting bars rotate to the other side? In the picture, these bars are on the wrong side. If a dog enters from the left, he should not be crossing a supporting bar as he turns to the right to go through the next opening in the weaves.

How do these compare to pawhut adjustable dog agility training obstacle set with weaves poles and storage bag? what are the differences?

What is the outside diameter of the upright stubs that the poles fit on? What is the diameter of the poles?