The strand is still hard to bend, purchased to be mounted on a 4x4 often playing in undergrowth and therefore sensitive to tree branches and etc. this antenna will be less fragile than originally shrink, but it's still less flexible than expected. I advise the use of a metal washer under the sheet metal found to expand the base of the antenna in its invisible and avoid in case of impact that the sheet does not bend. The threaded rod of origin and his little clamping bolt seem a bit small ...
