When first viewing this item it looks like plastic ends. It is not to my great surprize. This thing is secure!!! I mounted it in the 2021 Crosstrek for my GoPro Max 360 cam. It holds it nicely and the view is perfect from the cam. It is so nice I ordered another ball to put on my roof rack so I can put the cam outside when off road. BTW: the carbon fiber really sets it off because I have CF in the car already.