Works decently well for the price point, providing a semi-flexible custom mounting option for small devices like smart phones, small lights and maybe a tiny camera (eg gopro, Polaroid cube, etc). I was able to mount my iPhone (with a phone mount from a selfie-stick) under a kitchen cabinet so that I could watch videos and listen to podcasts while doing dishes.Note that the tension arm knob works to a small degree on the external ball joints, however some movement is still available in the arms due to the rotating �shoulder cup design. You need to take this into consideration when choosing the mounting position so that it doesn't move on you accidentally. The middle �elbow joint offers simply one axis of rotation, through 360 degrees. The ends are slightly different, though both provide 1/4 screws for mounting (i.e. one end to the clamp and the other to your item) and �lock down tighteners. Some additional 1/4-3/8 screw adapters are included along with some black pieces that provide a �cold shoe slider for mounting into a cold shoe flash base.