Transform your game with the PXT X19 fastpitch softball bat from Louisville Slugger. Building on the legacy of one of softball's most storied bat lines, this fastpitch softball bat features multilayered construction designed to amplify your energy into effortless power on every hit. Its Mass FX Loaded Sweet Spot technology puts more mass behind the bat's sweet spot than ever before, maximizing the momentum of your swing. The bat's PWR STAX barrel design distributes load evenly on impact, and it pairs flawlessly with its Mass FX engineering to provide more pop off the bat than ever before. Louisville Slugger: Others Make Bats. We Make History.