DeMarini M2M -3 Adult Baseball Bat with 2 5/8-Inch Barrel BBCOR Approved 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. Taper Ring Technology-DeMarini -3 bats comply with BBCOR standards, but maintain a distinct weight advantage over other aluminum bats. Tri Strut TR3 Handle Its the tightest/strongest composite DeMarini have developed. Gaining strength through triangular formations at the molecular level it efficiently transitions power from your hands to the barrel giving you balance and consistency. ION-V Endcap  The diabolical, dual density cap completes the power structure. Its designed to maintain the stiffness of the barrel while dampening impact vibration to give you amazing feel, shot after shot. BBCOR Approved for college and high school play. Thats because the weight is added to the taper of the bat and not the end of barrel to maintain the maximum sweet spot and keep swing speed at its fastest.