aluminum alloy, hard anodized Compatiblility with stabilizers, used in combination to increase the distance between the stabilizer and the camera, resulting in better operational Quick installation board clamp base, quick disassembly and assembly, suitable for switching between various PTZ/stabilizer Both the base and top is compatibility with 38mm specifications, compatible for standard devices Reserved 1/4 and 3/8 screw holes at the bottom, which can be directly installed with tripods or mounted on ballhead