Substantial, which was important to us considering the height of this obelisk.  Well machined so assembly, while needing two persons, was straightforward and without difficulty.  I always fear the product which comes with not one single extra nut or screw, but we had no difficulty.  Hard to figure out how to "pound" it into the ground up to the first hoop, as we felt that was important.  It went well.  Simple with clean lines and not too much "busy" detail.  We are very satisfied.