The Tristar Professional Tube Clamp is a solid metal tube clamp with 2 spigots of which one is equipped with a ¼” male thread. The clamp is easy to adjust and is compatible with a tripod or light stand with a diameter of between 20 and 100mm. The Tristar tube clamp can bear the weight of up to 12kg and can be used to mount a speedlite onto an autopole.