The Gun Clamp is made of Aluminium Alloy. It weighs 13.7grams. It opens up to 65mm and closes to 45mm at the smallest gap. If you require a smaller gap the inner wall can be packed in to close the gap.
It comes with the Rail attachment for quick attach to a SmartRest Tripod ball head and clamp. Other wise you can simply screw a bolt on to the base for an alternative mount option.
Can handle 10kg balanced weight.