The Hammer Radioactive Vibe Bowling Ball is a high-performance, 15lb bowling ball designed for competitive play. Featuring a yellow color and a reactive resin coverstock, this ball offers a strong Differential of .042 for better hooking on the lanes. With a symmetrical core and a polished finish, this ball is ideal for bowling on light to medium oil conditions. Designed for ten-pin bowling, this ball by Hammer is sure to enhance your performance on the lanes.