Add a ball joint to an underwater camera tray, strobe/video light, or even an action camera with this Male 1/4"-20 to 1" Ball Adapter from Bigblue. It is a very short arm component featuring a 1/4"-20 threaded screw at one end and a standard 1" ball joint at the other. The adapter enables you to attach your strobe, video light, or action cam to an optional support arm for various positioning options. It is constructed from a durable T6061 aluminum alloy.