Hi... don't worry, I'm not asking for instructions on how to install it

I just wonder if anyone here know the size of the hex nuts on top of the front strut towers?

I need to know in case I need to order a new socket before I leave work this afternoon, but it's 95 degrees outside (with humidity) in Miami, and I'm wearing a suit - so I'd rather not melt when I go out to pop the hood and measure.

 

Welp, got the answer. 13mm.

Strut bar is installed, and the car is feeling tighter than ever.