The Fence post repair spike goes past the concrete base of the wooden post Fence Supports and then screws directly to the post. The pictures show a post which had rotted through at ground level. A wooden stake could not be knocked down the side of the post because of the concrete around base, meaning the fence would need taking down and the concrete digging out. The fence post repair spike simplifies this by avoiding the concrete. Just push the flat of the repair spike against the post and with a hefty hammer knock it into the ground then simply screw to the fence posts you’re done! It’s that simple & easy to repair You can also cover up the dogleg of the spike with soil or other material which means only the upright shows making it a very tidy fence repair spike kit.