The tension clamps are used to hang the optical fiber cable on the towers/poles, it is used on the terminal towers/poles, tension towers/poles, joint towers/poles and tension towers/poles with an angle more than 25?. These are 4 mechanical strength types: 12KN, 24KN, 36KN, 48kN.The users can choose different type of tension clamp by the diameter and Max mechanical strength of the optical fiber cable, span of two near towers/poles.