inputs.text: good not heavy duty spring - know spring made mirror mount trucker antennas use hood mount supports 3 everhardt stt super tiger full wave cb antenna streets highways works well application antenna mount tilted slightly forward highways 65 70 mph antenna almost vertical however not heavyduty spring antenna swings wildly driving offroad dirt roads bumps holes rehemove drives good not great support spring someone needs heavy duty spring suggest buying procomm heavyduty barrel spring large application 4 stars