New for the 2019 season! Take your game to the next level with the new and improved Marucci bat lineup. One of the main differences from the CAT 7 is the new and improved AZ105 Alloy, the strongest aluminum on the Marucci bat line, allows for thinner barrel walls, a higher response rate and better durability. Additionally, the SDX EXT, or Extended Shock Dissipating Connection, increases the bat's overall stiffness for maintaining energy transfer to the ball while diminishing unwanted vibration to the player's hands. Another upgrade for the 2019 lineup is the 2nd Generation AV2 Anti-Vibration Knob that features a harmonic dampening system for better feel and less negative vibrational feedback. Marucci Sports: Honor the Game.