Two-piece composite construction - all-season durability, maximum trampoline, vibration-reducing connection SDX: Shock Dissipating Connection Technology - The SDX connection provides players a smooth, solid feeling at contact by dismissing vibrations and giving players total confidence at the plate Maximum barrel length - more confidence, larger sweet spot and maximum performance Individually handcrafted construction - superior attention to detail and quality USSSA 1.20 bpf certified, ISA certified, ASA certified