A: makes it look scary, so she won't run away
A: No Just the design and look of the clip. Serves no purpose.
A: no matter how good the design of mechanism, she still will run away
A: This is all black plastic and the bolt and tightening head are designed for hand tightening. It is a clamshell design and the plastic bolt threads into the bottom (not visible) half of the clamshell.