The impressive diameter is approximately 15.7 inches (40 cm). Large size roulette game set. A gorgeous look, also known as the "Queen of Casino", is easy to understand rules, but it is sure to get a big hit with the feeling of a boring pounding until the ball stops. Do you invite your family and friends to enjoy a casino party? This product is a household entertainment product. Please note that we will not be responsible for any damage or problems caused by bet behaviors.