The Rawlings Pro Preferred line of wood bats is the epitome of powerful performance and uncompromising luxury at the dish. The JT39B model features a strong, durable birch wood that gives every hitter a malleable and impactful feel on every swing. Each Pro Preferred bat is made to meet the highest pro-quality standard that your performance demands. And believe us when we say, you will feel the difference when you square one up with this wood bat series. These Pro Preferred wood bats are carefully crafted to represent the pinnacle of quality synonymous with Rawlings along with a 'Bowling Pin' shape similar to the 'torpedo' barrel to increase barrel surface.