This 15lb Hammer Black Widow Urethane bowling ball is designed for medium-heavy lane conditions with high performance. The asymmetrical core type and sanded finish provide excellent differential and ball motion. The ball is made of black solid urethane coverstock with a .056 differential and RG of 2.50. The ball has been drilled once and has features that make it perfect for ten-pin bowling. It is a used item but in great condition, ready to enhance your bowling experience. Get your hands on this United States made Black Widow and enjoy a fun and competitive game of bowling! Photos of exact ball