Easton Adult Bb13S2 S2 Composite/Tht100-3 Bbcor Baseball Bat Speed design for low M.O.I. and faster swing speeds Patented two-piece ConneXion technology for optimized feel at impact while maximizing energy transfer THT100 scandium alloy barrel for greater durability and expanded sweet spots 31/32" SIC black carbon tapered handle with performance diamond grip 2-5/8" barrel diameter, BBCOR Certified