The Dynasphere Platinum 2-1/4 in. pool balls feature industry changing technology that is sure to impress. Belgian designed and distributed, each ball endures a rigorous production and testing process taking 23 days and 49 individual steps to complete. Each set includes two cue balls that feature six blue rotors for increased feedback on spin. The rotor design is integrated into every solid and striped ball. Also included are Dynasphere 8-ball and 9-ball racks.