DeMarini Versus-3 Adult Baseball Bat with a 2 5/8-Inch Barrel BBCOR Approved Synthetic SC4 Alloy Barrel  DeMarinis proprietary aluminum extrusion provides a thickness tuned wall that reaches down the entire length of the barrel to create a wicked sweet spot that can stand up to each crushing blow. SC4 Alloy Handle  In the M2M, the same aluminum technology is extended into the handle as well. This puts the thickness-tuned technology, right in your hands so that every ounce of your swing is transferred to the ball with the maximum feel and feedback. N2M End-Cap - Scientifically tuned to absorb vibration while maximizing power Hybrid Performance Grip - 2 piece grip with thin performance BBCOR Approved for college and high school play