This DeMarini baseball bat is designed for adult players and features a 31 inch length and 25 oz weight. The bat is made of carbon composite material and has a barrel diameter of 2 5/8 inches. It comes in a striking red color and is suitable for baseball players looking for a high-performance bat. The bat is perfect for high school and adult players who want to improve their game.

The knob measurements is missing. The best I can see is the ones I put in the description. See photos.