Proven performance at the highest level is what makes the Omaha 517 one of the most tried and true models in baseball for over a decade. Still, the bat continues to evolve. This year, the Omaha 517 features an improved ST 7U1+ Alloy blend to help strengthen the metal and deliver an even more durable one-piece bat. Comes with a 1 year manufacturer's warranty from Louisville Slugger. - -10 Length to weight ratio - 2 58 inch barrel diameter - 1-Piece ST 7U1+ Alloy Construction - Huge sweet spot and stiffer feel on contact - Custom Lizard Skin premium performance grip - 78 inch tapered handle - Approved for play in USSSA - 1 year manufacturer's warranty.