Kupo Coni Clamp is made of lightweight cast alloy, can be securely mounted on any tube from 5 to 51mm and equipped with a saddle for mounting onto flat surfaces. The Elastic P.U. Pad also reduces surface damage and enhances gripping action. All mental parts are made of stainless steel for sturdierand anti-rusted features. The die -casting aluminum of locking knob provides with most rugged advantage. With built-in female socket allows the use of any attachments to hold anything from backgrounds to lighting fixtures. The spring safety locking system also offers double insurance while the screw locking action is not completely finished.