This is a simple but highly effective microphone holder for the Sony PMW-F5 or PMW-F55 cameras. It attaches to the camera by sliding in to the end of the viewfinder support arm and is held in place by the quick release pin on the arm. It's very easy to fit and remove and will take any microphone up to approx 30mm in dameter. You will need 4 "O" rings to loop over the slots in the mic holder to act as the suspension fror the mic. these should be 2 or 3mm thick with an inside diameter of between 28mm and 32mm (30mm recommended).