The NEW CV12 THT100 Aluminum ™ is for greater durability. High performance ultra thin aluminum shell design with lightweight composite inner tube. Slightly end loaded for more power. -10 lightweight length-to-weight ratio. 2-1/4” diameter barrel. 98 MPH performance; complies with all current Bat Performance Standards - ASA, USSSA, NSA, ISF, ISA, SSUSA.