The pro-performance version for Columbia 300 is called Authority and it draws some attention

Color: White/Grape

and styles

The Conspiracy Continues With This Superbad Black Bowling Ball

Prime Day Deal Track Theorem Solid Bowling Ball Weights:13 lbs. The pro-performance version for ColumbiaTrack Theorem Solid Bowling Ball Even More Versatility! Tracks Theorem line evolves once again with the introduction of the Theorem Solid. Following the success of the Hybrid and Pearl versions, the Solid delivers the same trusted length and sweeping motionbut with enhanced traction to conquer medium to oily lane conditions. This new addition fills a vital spot in the lineup, offering a reliable first ball out of the bag or a strong step up before