The product is a 15 lb. Hammer Black Widow Bowling Ball, designed for Ten-Pin Bowling. It is a single bowling ball drilled for use in the sport of bowling. The ball is weight 15 lb and is certified by the United States Bowling Congress (USBC). Made in the United States, this bowling ball is ideal for serious bowling enthusiasts looking to improve their game with a high-quality, competitive ball. With free shipping in the USA, this product offers convenience and value for those in need of a premium bowling ball.