14 inch Barrel Diameter Balanced Swing Feel 2-1/4 Inch Barrel Diameter E-Flex 360 F4P Handle Technology C-4 Proprietary Carbon Fiber A1 Knob Two-Piece, Composite Softball Bat Full Twelve (12) Month Manufacturer’s Warranty Approved for Play in USSSA, NSA, and ISA sanctioned Leagues and Tournaments. Approved for new 240 USSSA NTS Standards