New without tags The Rawlings Velo BBCOR .50 Wood Composite Baseball Bat in black and green is designed for adult players in the sport of baseball. Made with wood composite material and aluminum, this bat has a balanced swing weight for optimal performance on the field. With a 2 5/8 inch barrel diameter and weighing 30 oz, this 33-inch bat is suitable for high school and adult-level play. The blue accents add a pop of color to this sleek and durable baseball bat from Rawlings.