Louisville 2010 TPX Omaha -13.5 Youth Baseball Bat New Omaha now in a much lighter -. length to weight ratio for a quicker bat. Developed by Alcoa and enhanced by Louisville Slugger engineers, this Omaha bat undergoes a proprietary heat treatment - Baseball Express - Baseball Bats - T-Ball & Youth Baseball Bats - Baseball Express - Baseball Bats - T-Ball & Youth Baseball Bats