The spring is well finished and stable and works as I thought it will reduce the swing of the punching bag a little even if you can not expect miracles here.
Is not functioning properly, rust, bends but unfortunately not dampen it also the noise of punching bag is not essential. So you do not harm but uses mE also not very much.
Gibts nothing to complain about. Good spring of my punching bag. The same is also used in swinging. Ergo can withstand what. And with me just a box bag.
