I assure you that this is not the beginning of a fastener-related standup routine.

While working out at the gym, I saw a fastener that looks like a metal zip tie, with a screw to tighten it. Two pictures below. This can be useful for me in some of my projects. Any idea what it's called and where I can buy it? 

[![](https://i.stack.imgur.com/eVjEC.jpg)](https://i.stack.imgur.com/eVjEC.jpg)
[![](https://i.imgur.com/FmFbKOK.jpg)](https://i.imgur.com/FmFbKOK.jpg)