It is of aluminium construction with a rubber liner to protect the camera.
The clamp is tightened with two M3 hex-socket screws that require a 2.5 mm allen key. It's is exactly the right diameter so that you cannot crack the camera even if fully tightened. This clamp is only suitable for HD2 cameras.
VBOX Heavy Duty Camera Clamp for HD2
This item currently ships from the UK so there may be a delay in delivery. If you need the item urgently, please get in touch with us before placing an order.