Clamp design works much like a quick-release tension lever on a bicycle.
To install: Insert threaded screw into the 3-pin mount, tighten the included knurled nut and then close the clamp to lock down your GoPro.
Clamp design allows easy camera angle adjustment because you can just flick it open, adjust and flick it closed (instead of messing with a thumbscrew).
All-metal design withstands the shock, dust and water of extreme sports and other high-octane activities.