Mizuno 340684 HOT METAL - BBCOR Baseball Bat (-3) - Gold-BlackMizono HOT METAL BBCOR Baseball Bat ( 3) An incredibly hot one piece bat, Mizuno HOT METAL combines our powerful HotMetal single wall aluminum alloy with innovative CorTech technology, which adjusts wall thickness across the barrel to create a high performance bat with an aggressive sweet spot. Engineered details like an Optimized End Cap create a booming sound, while also increasing the size of the sweet spot to give you the ultimate one piece bat.