360°Adjustment double ball head, achieve any angle shooting, more flexible. Aluminum alloy ball, non-slip rubber ring, effectively reduce shooting vibration, stable and solid. Equipped with 1/4'' screw aluminium alloy adapter and action camera adapter,compatible with GoPro,Insta360,DJI Action 2,Osmo Action,SJCAM,Cell Phone,Card Machine etc(Kindly note,some devices need to be used with protective case or bracket). Jaw can be clamped on 22-38mm rods in diameter,if use with silicone pad,it can be clamped on 9-15mm rods in diameter. Bionic crab claw design, textured inner ring, more wear-resisting, adapt to a variety of extreme environments,giving more stable support for shooting.