The Tiles are made of Real bone with a bamboo backing and set in a Beautiful Silk like fabric covered case. The Set also includes the Counting sticks, dice, and bettors, and four 12" wood racks. Note: the racks do not fit in the carrying case. This set includes 8 jokers, so can be used for the American version of Mah Jongg, but includes an instruction booklet playing the Chinese version of Mah Jong. The tiles measure 1 inch high by 3/4 inch wide by 3/8 inch deep.