2020 Marucci CAT 8 Black (-3)AZ105 alloy, the strongest aluminum on the Marucci bat line, allows for thinner barrel walls, a higher response rate and better durability Multi variable wall design creates an expanded sweet spot and thinner barrel walls that are more forgiving after off centered contact 2nd Generation AV2 Anti Vibration knob features an upgraded, finely tuned harmonic dampening system for better feel and less negative vibrational feedback Ring free barrel