Dominate the groundball game with the STX(R) Hammer 500 Enduraform Unstrung Head. This defensive head offers a speed scoop design to win the groundball and enhanced sidewall bracing for improved durability. Performance EnduraForm material improves durability in any temperature Speed Scoop design minimizes drag for quick scooping groundballs Three-sidewall brace for stiffness C-Channel(TM) technology distributes stress on sidewalls, providing strength and stability