Pull rod material: reinforced stainless steel (higher strength and brightness than the old version, rust free and less sagging) Special structure: the upgraded version is added with anti overlap ferrule. It can effectively prevent the vibrator from contracting the inner sleeve under external force Smooth stretching, convenient recycling, light weight and high strength are IBI products<br><br>parameters: length: 5.2m(including nut) Link nut: M10 (tool thread) Number of sections: 14 First section diameter: 1.655cm End section diameter: 0.389cm Note: only one antenna, and M10 port DIY short wave radio DIY pull rod vibrator 5.2m long The tie rod can be used for DIY design of positive V antenna, GP antenna and antenna Material: stainless steel colour: silver<br><br>Package Contents: 1 x antenna<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.