I don't know go to Home Depot and look up the specifications
It doesn't swing freely. You can push it forward and it will reach the wall, but it shouldn't touch the wall under normal use because the rubber fitting prevents it from swinging freely.
No. Its too hard. You will end up bending the ring.
I don't know look up to specifications at Home Depot
Not stainless steel at all. It's aluminum kind of material. Very cheap looking.
1 1/4 in x 2 1/4 in
My last answer stated that the ring is chrome plated plastic when it is actually aluminum...not sure if it is chrome plated or polished aluminum but it is dull, not like the wall mount which is very shiny chrome.