New Mizuno B19 Hot Metal BBCOR Baseball Bat 3 2 5 8" Senior This is a replacement shaft Lavender This is a replacement shaft designed to fit callaway's razr fit driver or fairway wood Means Faster Swing Speeds ' Stiff Handle Flex For Maximum Power higher performance Optimized end cap: actually widens sweet spot & creates booming sound Speed helix grip: designed to provide comfort and durability 3 Length To Weight Ratio BBCOR 2 5 8" BArrel Diameter One Piece Alloy which leads to more pop and distance without sacrificing durability Cortech design: wall thickness is adjusted across the barrel to create a massive sweet spot 1 piece design: less flex