Slight thumbadjust...The 15 LB 12 Oz. SWAG Judgement Hybrid Bowling Ball is a high-performance ten-pin bowling ball designed for competitive play. Made with reactive resin coverstock and a urethane material sourced from the United States, this ball offers a polished finish in a multicolor design. With a symmetrical core type and a differential of .050, this ball is ideal for dry lane conditions and has a RG of 2.500. The Ball brand ensures quality, and the manufacturer warranty of 1 year provides peace of mind for your investment in this top-level bowling ball.