The Aramith Tournament TV Pro-Cup Billiard Ball Set is used in television events from around the world including trick shot events and mens and womens professional tournaments. Made in Belgium by the worlds leading ball manufacturer, these balls are manufactured to precise specifications to ensure that you can play your best. Each 2 1/4″, 6-ounce ball is precisely calibrated for maximum consistency. Made with the best phenolic resin available, which is designed in their own labs, the balls have exceptional scratch and impact resistance. Each ball has an extra durable smooth surface that minimizes table cloth wear and extends ball longevity. You always get professional quality specifications with Aramith Pro Series ballsconsistent density, balance, diameter, roundness, color, glossiness, hardness, and weight.