Brunswick Alert Bowling Ball ? Smooth Control Meets Consistent Power The Brunswick Alert Bowling Ball is your signal for unmatched consistency and control on medium oil. As the debut release in Brunswick?s all-new Alert series, this ball is engineered to deliver a clean, predictable motion with powerful continuation. Built around a new low RG / low differential symmetric core, the Alert provides a smooth, stable reaction that?s easy to read. Its Savvy Solid Reactive coverstock ensures reliable traction and mid-lane control, making it an ideal benchmark ball for bowlers of all styles. For rev-dominant players, the Alert offers a cleaner path through the heads with a smooth, controllable backend motion. For medium or lower-rev bowlers, it adds traction and continuation to help round out your arsenal and increase pin carry. With its versatility, reliability, and powerful motion, the Brunswick Alert is built to be your go-to choice for league play and medium-oil conditions. Key Features Low RG / Low Differential Symmetrical Core for predictable motion Savvy Solid Reactive coverstock provides excellent mid-lane traction Ideal for medium oil patterns and changing conditions Smooth and controllable backend reaction Balanced performance for both rev-dominant and lower-rev bowlers Specifications Brand: Brunswick Core Name: Brunswick Alert Core Core Shape: Symmetrical Coverstock Type: Reactive Coverstock Name: Brunswick Savvy Solid Reactive Radius of Gyration (RG, 15LB): 2.47 Differential (Diff, 15LB): 0.037 Mass Bias Strength: N/A Flare Potential: 3?4 Inches Surface Finish: 2000 Grit Lane Conditions: Medium ? Heavy Oil Ball Weights Available: 12LB, 13LB, 14LB, 15LB, 16LB Ball Performance Level: High Performance Bowling Balls Color: Black, Purple