Mizuno Frenzy 3.0 (-8) Fastpitch Bat The Mizuno Frenzy 3.0 (-8) Fastpitch Bat is made from innovative materials including Black Onyx Carbon and provides increased bat speed and control, less vibration, and improved feel and durability. Mizuno's Techfire Technology for increased sweet spot utilizing three different levels of materials Mizuno's Black Onyx Carbon for improved durability and feel Mizuno's Anti-Shock Construction for less vibration and improved feel Lower swing weight allows for increased bat speed and control