Whitworth Blind Threaded Ball

Whitworth (Kodak) ball with blind thread inside, made of anticorodal aluminum and anodized with 40 microns (military standard) to ensure the maximum durability and excellent resistance to wear and to sea salt. It can be easily adapted to different supports, flashes, lights, and so on. An o-ring at the center of the ball is acts like a clutch: the ball tightened by the clamp can be loosened so as to move the arm in the water without having to re-tighten it.