Yellow Mountain Imports Go Game Set with Go Floor Board (0.4 Inch Thick Rosewood) and Single Convex Yunzi Stones The floor board (goban) is made of solid rosewood which is renowned for its strength, density, and silky smooth texture; it is designed and handcrafted in the style and aesthetic of the Ming Dynasty of China; it features inlaid lines and star points; these inlaid lines create a standard 19 x 19 playing field; drawers are built-in on both ends for the storage of stones The board's thickness is 0.4 inch (1 centimeter); the height of the floor board with legs included is 5.8 inches (14.5 centimeters); this board is Chinese standard size with grids that are 23 x 25 millimeters; the board dimensions are 20.9 x 18.9 x 0.4 inches (53 x 48 x 1 centimeters) This set includes 181 black stones and 180 white stones; all stones are genuine Yunzi stones; each stone is a 21.5-22 millimeter (Size 3) single convex stone measuring 5.6 millimeters tall and 21.5-22 millimeters wide (approximately 0.22 x 0.87 inches); booklet on how to play go, "The Way to Go" by Karl Baker, is also included Yunzi stones have a balance and a deeply rich color that are instantly noticeable; they leave an audible ''snap'' as you place them on the board; the texture, symmetry, and precision of these stones are superior 30 day return policy; here, at Yellow Mountain Imports, we want you to be satisfied with your purchase; you are backed by our 30 day no questions asked money back guarantee so you can buy with confidence Board: 20.9 x 18.9 x 5.8 inches (53 x 48 x 14.5 centimeters) Stone: 0.22 x 0.87 inches (5.6 x 21.5-22 millimeters) approximately