This is a mahogany plank that has 2 piercings with gold leaf in one opening and Mirror finish paint in the other, which represent drops hitting the water, the rings going out from the center of the holes are copper nails and copper nails with stainless steel washers. the piece has a top cap and bottom plate of aluminum and 2 stainless steel posts are in the body of the plank and then into the ground to support the piece. It is finished with teak oil.