16 concave /convex turned & carved wood tiles, mounted on ( painted black ) 1/2” mdf. The woods are; Bimble Box burl (Australia), Big Leaf Maple burl (Calif.) Claro Walnut burl (Calif.) and Ash Leaf Maple (NC). Buffed acrylic lacquer finish. Dim 24”L X 24”W X 2”D