Product Description The Hammer line gets more attitude with the newAnger bowling ball! The HK22 coverstock has changed how we develop bowling balls and created endless performance possibilities. We can explore a broader range of core numbers because of HK22s versatility and strength. Even when shiny, its stronger characteristics in oil allow us to get more out of higher RG core designs than ever before and opens up a new realm of reaction. TheAngers length and skid-flip motion are unmatched in the Hammer line-up. We started with a modified version of the Infamous core, a dynamic core with a high RG and designed for length. Adding HK22 with CT Reactive Flip additives makes this the most responsive Hammer ball on medium to lighter conditions.Color: Black/Red/Coral *Please note that colors may slightly vary from image shownCoverstock: HK22 – CT Reactive Flip PearlWeight Block: Modified Infamous Factory Finish: 500/1000/1500 Siaair Micro Pad / Crown Factory CompoundFlare Potential: 4-5″ (Medium-High)Radius of Gyration (RG): 2.567Differential (Diff): 0.049Intermediate Differential (Mass Bias): 0.000WeightRGDiff.Interm. Diff.162.5720.0410.000152.5670.0490.000142.6030.0490.000132.5850.0400.000142.6080.0400.000