You are looking are a NIW 2016 LOUISVILLE SLUGGER Z4000 USSSA SOFTBALL BAT SBZ416U-E 28 oz END LOAD. As with any bat you need to check with your league, organization, or tournament director before purchasing. Thank you and good luck. The Z4000 bats for 2016 are made as a 3-piece, constructed out of 100% Pure 360 Composite material. The barrel-to-handle connection is held together using the TRU3 piece, which significantly eliminates vibration and efficiently transfers contact energy back to the barrel.
Speaking of the barrel, Louisville uses a Grit Blast Finish to create more spin on the ball. This spin will increase the intensity of your hits, making them go further at a faster speed. Lastly, the Z4's have a 7/8" Tapered Handle, 12" Barrel Length & the standard slow-pitch 2 1/4 Barrel Diameter. End Loaded - Made for power hitters, this Z4000 has an End Load weighting for more mass at the end of the barrel. USSSA - This bat is approved for USSSA, NSA and ISA softball associations. Z4000 USSSA End Loaded Features. Association Approval: USSSA, NSA and ISA (Not approved for ASA or ISF).