<b>Detailed introduction:This spring keeps it steady with high winds but will easily bend to save you antenna when hitting branches.</b> If you have a fiberglass antenna you need this.<br><br> <b>This is pretty much needed if you’re going to have an antenna sticking above your roof line where trees</b>,<br><br> If something hits the antenna and flings it back, it returns to its position very quickly without whipping around too much which protects your car from being hit.