The first one is one of my favorites, since it's centered and I like the way the ring looks. The other 2 show different focuses at an angle. I had MANY other pictures of more parts, but this was the angle that initially made me want to take pictures of it. :0) Welcome to a part of my weekly torture...ahem... healing therapy. LOL
By the way, zero editing (except for adding the watermark).
Here's the 1st picture. The focus is on the ring and I did a pretty straightforward shot.
In this one, I angled the camera a bit and focused on the front ring. I really like how the metal shines in these pictures.
And finally, I changed the focus to the hooks in the back that hold the ropes.