Metal Tree Stakes Professional tree stakes for plaques that need to last. They are made from iron which is powder coated. The stake height is 23.5 inches and the metal spike can be re-enforced with the supplied pin when mounting in concrete. The face which tilts upwards is 4" 100mm high x 2" 50mm wide and has two screw holes for mounting the backing board NB not suitable for backing boards less than 4" 100mm in height