It can hold circular tubes with diameters ranging from 13mm to 48mm, and can hold objects up to 37mm thick. It is mainly used for connecting 1/4 screw phone stands and tablet stands to tripods, motorcycles, and gyms Double 1/4 female screw holes are mainly used to connection tripods, photography stands, sports cameras, phone and tablet clips Strong clamp, motorcycle bike live streaming stand, photography tripod round tube rod double 1/4 internal screws+1/4 external screw can be used for live streaming, photography, positioning stands and more The clip is used to install on live streaming phone stands, desks, bicycles, microphone stand