DeMarini Vexxum Baseball Bat DX-1 Alloy 30" 16.5 oz with a 2-1/4" barrel diameter and -13.5 weight drop. This youth baseball bat is part of the VOXXUM series, featuring a Half & Half design and a balanced swing weight. It is made of metal alloy in the United States for USSSA play, meeting a bpf of 1.15. The bat is multicolor and not signed, suitable for intermediate level players.