Storm Concept Bowling Ball Weights:15 lbs. The QR-9 Hybrid coverstock is

The QR-9 Hybrid coverstock is polished on this ball to provide easy length through the front of the lane

resulting in increased length and a more pronounced

Featuring: Blues Brothers

474 (15 lb

Color: Denim Blue

Storm Concept Bowling Ball Weights:15 lbs. The QR-9 Hybrid coverstock isStorm 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,