The Roto Grip Rubicon Bowling Ball is a high-quality 15-pound ten-pin bowling ball with a 3.5-4" pin and 3.38oz TW. It features a reactive resin coverstock, asymmetrical core type, and a matte finish. This bowling ball is designed for medium-heavy lane conditions and offers high performance on the bowling alley. Made in the United States by Roto Grip, this ball is ideal for serious bowlers looking for a high-quality and durable bowling ball with advanced features.