Storm Concept Bowling Ball Weights:14 lbs. The bag features easy-glide skate

The bag features easy-glide skate wheels that are equipped with smooth rolling bearing

Asymmetric w/ DynamiCore

Perfect for tournament players

Their sporty style pairs with reliable traction

Coverstock: S70 Hybrid

Storm Concept Bowling Ball Weights:14 lbs. The bag features easy-glide skateStorm Concept Bowling Ball The SPI LAB Series introduces the Concept, our next innovative release that reverses the narrative on how core cover combinations are developed for challenging patterns. The ARC Cover has the highest coefficient of friction (COF) values and is right at the USBC limit on oil absorption time. With the Concept, the coverstock acts as both the engine and the tires, while the Radius Weight Block behaves as the traction control,