The leader in Fastpitch continues to lead the pack with the all new CF8 -10. The most popular bat in the DeMarini line up, the CF8 -10 is ALL NEW and it packs a punch with a balanced swing weight while maintaining the ultimate in barrel performance for power and pop. 2 14 Inch Barrel Diameter. -10 Length to Weight Ratio. Approved for Play in ASA, USSSA, NSA, ISA, and ISF. D-Fusion Handle Technology Eliminates Vibrations and Redirects Energy to the Barrel. End Cap is Specifically Designed to Sustain Optimal Barrel Compression and Maximize the Sweet Spot. Hot Out of the Wrapper Performance. Paradox Composite for a Bigger, More Responsive Sweet Spot. Redesigned to Sustain Maximum POP. Two-Piece Composite Design.