A favorite from a player in Arizona.  This bat is in great shape with plenty of life left.

Here are the manufacturer's specifications.

Crafted for excellence. Designed with Marucci's new, thermally treated AZR alloy for a more responsive, forgiving feel, the CAT9 aluminum baseball bat features a massive sweet spot that is ready to do damage right out of the wrapper.

The Marucci CAT9 Senior League Baseball Bat features a huge 2 3/4" barrel diameter, balanced swing weighting, and -5 length to weight ratio.  The Marucci CAT 9 series is Approved only for play in USSSA Leagues and Tournaments. 

Product Features: 

• -5 Length to Weight Ratio
  
• 2 3/4" Barrel Diameter
• Balanced Swing Weighting
• Utilizing a three-stage thermal treatment process, our new AZR alloy offers a more responsive microstructure for better feel, more forgiveness and more performance while maintaining the same strength as its predecessor
• 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 construction allows for more barrel flex and increases performance with no "dead" spots
  
• Precision-balanced barrel results in a lower M.O.I. and balanced feel for precision and control
  
• One-piece alloy construction provides a clean, consistent, traditional swing
  
• Professionally inspired handle features a removable taper and an ergonomic knob shape for more top-hand control and comfort
  
• Micro-perforated soft-touch grip with extra tack improves feel and control
  
• Grip weight and manufacturing tolerances may cause slight deviation from the listed weight