he CAT8 -10 is a USSSA certified, one-piece alloy bat built with AZ105 super strength aluminum alloy meaning thinner walls, higher response rate, and better durability. The precision-balanced barrel features a ring-free multi-variable wall design that creates an expanded sweet spot, while the patented AV2 Anti-Vibration knob produces a better feel and less negative feedback. Comes with a 1 year manufacturer's warranty from Marucci. - 2 3/4 inch barrel diameter - One-piece, AZ105 alloy construction - Multi-variable wall design creates an expanded sweet spot - 2nd Generation AV2 Anti-Vibration knob - Ring-free barrel construction - Precision-balanced barrel - Professionally inspired handle - Micro-perforated soft-touch grip - Approved for play in USSSA 1.15 BPF - 1 year manufacturer's warranty.