This Storm Proton Physix bowling ball is a high-performance ball suitable for medium-heavy lane conditions. It features an asymmetric core type and reactive resin coverstock, making it ideal for ten-pin bowling. This ball weighs 15 pounds and has a 2-3" pin and 2.83ozTW. It comes undrilled and is a first-quality item from the United States. The multicolor design adds a touch of style to your game. Whether you're a pro or a beginner, this ball is perfect for enhancing your bowling experience.