Easton BGS2 Surge Bbcor Adult Baseball Bat (-3) NEW THT100 Aluminum barrel for greater durability, strength and toughness 31/32 IMX Stiff Composite tapered handle Flex for maximum power through the hitting zone Improved patented two-piece ConneXion for optimized feel at impact while maximizing energy transfer Patent pending Brace Barrel technology locates braces at critical points in the barrel to meet BBCOR compliance minimizing swing weight and maintaining a low M.O.I. to achieve faster swing speeds -3 length-to-weight ratio , 2-5/8 barrel diameter, BBCOR Certified