Mizuno Craze Slowpitch Bat The Mizuno Craze Slowpitch bat is a balanced bat with a 13" barrel. This State of the Art Product is SOLD WITHOUT WARRANTY for better value. Mizuno's Techfire Technology for increased sweet spot utilizing three different levels of materials Utilizes 100% of Mizuno's Black Onyx Carbon for improved durability and feel 13" barrel, Balanced design Approved for ASA, USSSA, NSA, and ISA play