This Triple Ball Clamp with Cutouts and T-Knob from Ultralight is used to connect various underwater camera rig components using 1" mounting balls. The ball recesses on the lower half of clamp have cutouts for more flexibility in positioning clamped arms or accessories. The black anodized T-knob makes tightening and loosening the clamp easy, and it can be useful to the cinema industry for color-coding camera rigs.