The New In Box 15 Pound RotoGrip Gremlin Tour X bowling ball is a high-performance ten-pin bowling ball designed for medium-heavy lane conditions. Made with reactive resin coverstock and an asymmetrical core, this ball offers a sanded finish and is undrilled, providing players with a versatile and reliable option for their bowling game. With a 1-year manufacturer warranty and being approved by the United States Bowling Congress (USBC), this ball is a top choice for competitive and recreational bowlers alike.