HThe Storm IQ Tour Ruby Bowling Ball is a high-performance ten-pin bowling ball weighing 15 lbs. It features a multicolor pearl reactive coverstock with a symmetrical core type, suitable for both drilled and undrilled bowling. With a differential of .045 and a polished finish, this ball is designed for great shape and offers a 1-year manufacturer warranty. Perfect for bowling enthusiasts looking for a premium-quality ball to enhance their game, this Storm bowling ball is a great choice for those who prioritize performance and durability