The 2161 Multifunction Crab Clamp with 3" Ball Head Arm from SmallRig enables you to mount a 1/4"-20 threaded camera accessory, small light, or other component onto a rod or surface measuring up to 2" in width.
The 3" clamp arm includes a 180° mini ball head at each end, enabling you to position your accessory at almost any angle. This clamp tightens easily using its large wingnut.