EASTON Official Youth Baseball Bat : RAMPAGE YB13RP, 2-1/4" Diameter, 7046 Aircraft Alloy, BPF: 1.15, Vibration Reduction System Cushioned Grip, Weight to Length Ratio: -12.5, Length/Weigth: 31"/18.5 oz. (Approved for Play in Little League, Babe Ruth Baseball, Dixie Youth Baseball, Pony Baseball and AABC) 2-1/4 Inch Barrel Diameter -12.5 Length to Weight Ratio 7046 Aircraft alloy Extended Barrel Design With Massive Sweet Spot USSSA BPF 1.15