Check the listing for details. Storm Tropical Surge Emerald/Charcoal Bowling Ball. Color: Multicolor, Condition: New. Listed at 93.95 USD. Storm Tropical Surge Bowling Ball Our beloved Tropical line has evolved again! The all-new Surge Core, with a boosted differential paired with our dependable Reactor formula will give you the curve you’ve been craving for. Six exciting colors and fragrances will appeal to just about anybody.Coverstock Type: Pearl ReactiveCore Type: SymmetricalRecommended Lane Conditions: Dry to Medium Dry LanesReaction Type: Slightly Angular Backend Motion on Drier Lane ConditionsX Factor Hook Rating Scale (1-20): 11Radius of Gyration (RG): 2.58 (15lb)Differential (DIFF): .024 (15lb)Flare Potential: 2-4” MediumCore: SurgeCoverstock: Reactor Pearl ReactiveFactory Finish: 1500 Grit PolishedColor: Emerald/CharcoalFragrance: VanillaPerformance: Value Performance*SELECT WEIGHT FROM DROP DOWN MENU This is a brand new in box 1st quality ball and is un-drilled. As we have many of these available, this listing is not for a specific pin or top weight. Any requests may be made in a note with your payment and will be matched as close as possible.