RoadPro RP-311 Spring Shock: Chrome Plated, Medium Duty, 1 Pack Review

RP-311HD shown is RP-311 The buyer should be aware of this. Otherwise I'm pretty sure it works fine BUT "I" bought what the picture looked like not knowing it was HD and the wording of the description was only for RP-311 not RP -311HD. The seller has to change the picture.

You see, this is no ordinary car antenna. This is larger for a CB antenna and the thread is too wide for normal use. I have been looking for a spring to install under the antenna mast as the sink is constantly deflecting the rigid mast. This is not the kit I needed. This works well for a larger antenna.

I tried it on my 2" FireStick CB antenna but it wasn't strong enough to prevent the antenna from popping up hanging out of the highway. I have a '04 Jeep Wrangler with a tail light bracket. At over 80 km/h, the antenna swayed so much in the wind that it hit the rear window. It was so bad that I stopped and drove it down the side of the freeway because it hit the glass so hard I was afraid it would break the window. let's see if that's enough. I gave it 2 stars because it claims to be good up to