DeMarini The One Softball Bat 4.ONE Barrel - designed for maximum stiffness and explosive performance SC4 Alloy Handle - Our stiffest aluminum handle, perfectly tuned to the 4.ONE barrel to provide one-piece feel with Half+Half technology Dish End Cap - Concave design creates maximum stiffness at the end of the barrel while driving energy back to the sweet spot End Loaded weight distribution Approved for ASA only