Used1 Louisville Slugger Prime 919 31 21 USA Youth Baseball Bat 2 5 8 10 Men 12.5 Wide 5 Length to Weight Ratio Camel Brown 5 Length to Weight Ratio ' Free Shipping ' Internal Carbon Fiber Sleeve ' One Piece Construction ' Patented Pro Cup End Cap ' ST+20 Hybrid Alloy and ISF ' IMX Composite Handle and Barrel ' No USSSA Stamp ' Two Piece Fully Composite Design Babe Ruth cal ripken Baseball and pony Baseball 3pc composite design new adv microform barrel features an advanced construction that maximizes barrel size while maintaining maximum performance and pop on contact Features vcx vibration control connection a patented design that allows for independent movement between the barrel and the handle