The Aramith Premier Carom Balls Set is built for players of any level to satisfy their needs for a consistent reliable performance. These balls are made out of phenolic resin and will last up to 5 times longer than any other standard carom set. Designed and manufactured based on the 7 criteria for ball control: density, balance, diameter tolerance, sphericity, color, surface polish and brilliance. Whether you are home owner or commercial table owner these balls will meet your demand of playability, durability, cost and satisfaction.