Product Description Columbia 300 has thrived on paying respect to its roots. Taking yesterdays technology and updating it to perform on todays conditions has created some excellent bowling balls, and it’s now time to do it again with an old favorite, the black and gold Messenger. The introduction of Messenger PowerCOR two years ago produced great results and were advancing the line even further by adding the HK22 cover base for more performance where bowlers love to see it. The Messenger PowerCOR Pearl is poured in the exact colors that made the ball famous in the early 2000s, and the updated Messenger PowerCOR core and HK22 Reflex Pearl make this ball a must-have for anyone looking for results on light to medium oil.Color: Black/Gold *Please note that colors may slightly vary from image shownCoverstock: HK-22 – Reflex Pearl ReactiveWeight Block: Messenger PowerCORFactory Finish: 500 / 1500 / 2000 Siaair Micro Pad / Crown Factory CompoundFlare Potential: 3-4″ (Medium)Radius of Gyration (RG): 2.515Differential (Diff): 0.040Intermediate Differential (Mass Bias): 0.000WeightRGDiff.Interm. Diff.162.5240.0400.000152.5150.0400.000142.5310.0400.000132.5820.0420.000122.6050.0420.000112.7690.0020.000102.8000.0020.000