The DeMarini CFX Insane CFI-18 is a high-performance, two-piece composite fastpitch softball bat designed for advanced players. With a barrel diameter of 2 1/4 inches and a drop weight of -10, it weighs 23 oz and is 33 inches long. The bat features a Paraflex Composite Barrel and a balanced swing weight, delivering maximum energy and power. It is suitable for use in USSSA, ASA, NSA, ISA, and ISF associations.