The Marucci Baseball Bat CAT 7 30 20 oz is a high-quality, durable baseball bat designed for adult players. With a 2 3/4 inch barrel diameter and made from a metal alloy, this bat delivers powerful performance on the field. The CAT7 series from Marucci is known for its superior quality and craftsmanship, making it a popular choice among serious baseball players. This specific model is 30 inches in length and weighs 20 oz, providing a balanced feel and optimal performance for players in the USSSA and other adult leagues.