[SUPER STRONG SPRING] Carbon steel construction, Heavy-Duty Barrel Spring [Great Specifications] Standard SO-239 connector with 16.4'/About 5m RG-58 Coax Cable [How to install] TWO U-bolts which can be used with the attached plate for pole mounting. [INSTALL THE SPRING FUNCTION] The spring base reduces the damage done by impacts by allowing the whip to bend and flex out of the way. Such as the dense jungle, hard highway or off-road use etc. [Compatibility] Working for the HF/UHF/VHF/CB Band Antenna, the antenna Standard UHF MALE connector. Coaxial Cable: RG58

Length of Cable: 5m

The cable of connector: FME.female ( includes:FME.male to SL16-male adapter)