SmallRig Multi-Functional Crab-Shaped Clamp with Ballhead Magic Arm 2164 includes Universal Magic Arm 2163 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..