TPX Response Gen1x 32/20 FP204 Fastpitch Softball Bat Red The unique FP204 from Louisville slugger features GEN1X with Scandium alloy. The bat has three compartment air pressureised chamber. This unique shell gives a lightweight aluminium outer shell combined with an ultra strong and stiff Titanium sleeve.Bat Specs:' 2 1/4" Barrel' GEN1X with scandium alloy' Bottle Bat Design' 3-compartment air pressureised chamber' Patented Sims Sting Stop system' Patented Pro Cup end cap' Lisa Fernandez signature model'