The Purple Pearl Urethane bowling ball by Hammer is a mid-performance ball with a symmetric LED core design and a pearlized urethane coverstock. The ball is designed to provide the bowler with ultimate control of the entire lane, particularly for light to medium oil patterns, with a smooth arc reaction. The ball has a 500, 1000, 2000 Siaair Micro Pad finish and comes in weights from 12 to 16 pounds. The Purple Pearl Urethane is a proven staple with old-school technology and new-school hitting power, designed to provide the bowler with a reliable and consistent urethane ball motion. The ball has received positive reviews from customers, who praised its consistency, reliability, and ability to control the entire lane. Hammer Bowling is a company based in Muskegon, Michigan, that produces bowling balls, bags, and accessories.