5" Smooth KRuze urethane wheels with steel bearings for an ultra smooth quiet ride (Black/Carbon only)

With the stitch-down construction

Core: Modified Contrusion

Core: Spheroid

Safe for use on all ball types

Roto Grip Nuclear Cell Bowling Ball tier 4 10% 5" Smooth KRuze urethane wheelsInside you will find the forever famous Nucleus Core. By far the most versatile asymmetrical core design ever created. No matter how it is drilled, or how you toss it down the lane, this core always gets into motion and stays in motion. Our newest version of eTrax Pearl contains a new chemical additive as well as ratio changes in order to produce better traction in the midlane and create more responsiveness to friction down lane. There is no doubt the