1.Adjusted and tightened with a wingnut in any angles.
2.Clamps the accessories tight easily and conveniently.
3.Clamps the accessories with diameter up to 54mm.
SmallRig Multi-Functional Crab-Shaped Clamp with Ballhead Arm 2161 includes Universal Magic Arm with Small Ballhead Magic Arm 2157 and Super Clamp 735. It could attach monitor or video light on the other end, while clamps the accessories with diameter less than 54mm, like DJI stabilizer, Freefly stabilizer, video C-stand etc. It features a wingnut in the middle to adjust the angles and positions of monitor or video light or other accessories.