Here's a railing I did. The request was for it to be different, artsy and Williamsburgy. I guessed the last word meant scrolls.
Oh, it's all solid bar.
It goes in concrete, in the ground about 3' for stability
Those descriptive notes pulled from Randy's Facebook offerings
The key to the physical aspects are the massive solid round bar (maybe 1 1/2 inch) used as the hand rail. Which then extends downwards into the ground a long way for the anchor. The elegance comes from the long taper that bar has been pulled out to - which makes the top spiral terminal.
I generally do not much like scroll work. In the hands of most, they are normally to mechanical and simplistic. Here however, Randy has extended each scroll element into a series of reducing reversal curves.