The all new Easton Quantum 1-Piece bat is constructed of lightweight and durable ALX50 Aircraft Grade Alloy for extended durability. All-Sports grip provides comfort. Comes with a 1 year **from Easton. - -10 Length to Weight Ratio - 2 1/4 Inch Barrel Diameter - 1-Piece, ALX50 Aircraft Grade Alloy - Approved for USA Baseball - 1 Year Manufacturers Warranty