Easton SP16BHU Helmer CXN Zero Loaded USSSA Slowpitch Softball Bat 12 Inch Barrel Length 2 1/4 Inch Barrel Diameter Approved for Play in USSSA, NSA, ISA, and SSUSA CXN ZERO Technology - Eliminates Virtually All Vibration to Add More Power to Every Swing End Loaded Swing Weight - More Mass in the Barrel = Extreme Power and Distance