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. Its 2 5/8-inch barrel provides an expanded sweet spot for more base hits. 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. The barrel is also precision-balanced for a lower M.O.I, resulting in a lighter feel as you swing and giving you better precision and control. Its one-piece alloy construction provides a clean, consistent swing, and the tapered handle with its soft-touch grip is topped with an ergonomic knob shape for more top-hand control and comfort while you're at the plate.