Combat B5 Da Bomb Special Edition 2 5/8" Senior League Baseball Bat -5, -8, -10, & -12 -10, -8, & -5 Length to Weight Ratio - 2 5/8 Inch Barrel Diameter Anisotropic Composite Weave - Blended Fiber Technology (BFT) - Features USSSA 1.15 Stamp - Precision Molding Technology Nanocomp Technology Inside - One-Piece Full Composite Design Full Twelve (12) Month Manufacturer's Warranty