Used Marucci CAT9 Composite Certified Bat (-10) 21 oz 31"

2-3/4" Barrel Diameter Slightly End Loaded Feel (Marucci & JustBats Believes That All Hitters Should Be Able To Handle It) Two-Piece, All-Composite Baseball Bat BBCOR .50 Certified For High School & College Play Legal For Play In Intermediate (50-70) & Junior League Divisions Of Little League Colorway: Red | White | Blue MDX Composite Material - Built With Multi-Directionally Patterned Layers Of Composite. End Result Is A Material Designed To Create An Ultra-Responsive Barrel. Outer-Locking System (OLS) - Attaches The Barrel To The Handle From The Outside In. This Provides One Of The Stiffest Connections Available And It Also Reduces Nearly All Vibration. Ring-Free Barrel Construction Allows For More Barrel Flex And Increases Performance With No Dead Spots Sting-Free Comfort Knob Has An Ergonomic Design To Increase Comfort And The Batter’s Ability To Control The Bat Micro-Perforated Soft-Touch Grip Provides Needed Tack On The Handle Of The Bat