This Hammer 3D Offset Bowling Ball is a high-performance ten-pin bowling ball that weighs 15 lb. It features a pearl reactive coverstock in a striking purple color, with an asymmetrical core type and a medium-heavy lane condition. The ball is designed for use in the United States Bowling Congress (USBC) and has an RG of 2.489. The ball is a great addition to any bowler's equipment, with its high-quality construction and innovative design. Its 3D offset model ensures that it travels smoothly and accurately to the target, making it an excellent choice for players of all levels. Whether you're a seasoned pro or just starting out, this Hammer bowling ball is sure to enhance your game.