Specification:Part name: telescopic antennaColor: silverExpanded length: 5.6m/18.4ftNumber of sections: 14 sectionsWeight: 285 g/0.6 lbsSize: Folded length: 50 cm/19.7 inches (including nuts)Stretch length: 5.6M/220 inchesConnection nut: M10 (external thread)First part diameter: 16mm/0.6"Distal diameter: 3.6mm/0.1inMaterial: 201 reinforced stainless steelPackage Contents:2 x whip antenna Features: * Made of high-quality materials, sturdy and practical* 5.6M/18.4FT GP whip antenna suitable for amateur radio users DIY shortwave antenna Yagi antenna* Can be used with DIY shortwave radios and telescopic antenna elements. It can also be used for DIY positive V antenna, GP antenna, and Yagi antenna.* Special process: The bottom 10 sections are all made of secondary reinforcements to change the stress points and make them stronger and tighter. Of course, folding and unfolding takes a little more effort than a regular telescopic antenna. Therefore, upright shaking can be reduced and automatic retraction can be avoided, thus extending its lifting span.When extending, it is recommended to pull out section by section from the top, and when retracting, it is recommended to retract section by section from the bottom.