handle. The arm has no base and attaches to these support accessories by way of a 1/4"-20, 5/16", or 8.0 mm screw. A 1/4"-20 screw is included, and the others are available separately. The arm allows flexible positioning of the light while shooting underwater, giving you a variety of possible lighting angles and positions.
A built-in safety cable that runs through the entire arm ensures that you will never lose your valuable lighting equipment, even if you accidentally disconnect the arm. The flex arm joints can be securely popped back into place, even while underwater.