The Prime 918 (-10) 2 34" Senior League bat from Louisville Slugger is the most complete bat in the game. The pinnacle of performance engineered to perfection, this bat is made with a 100% Composite Microform barrel, designed for a lighter swing weight and maximum pop. The new RTX end cap provides a longer barrel shape, and TRU3 construction helps reduce vibration so you can get the most out of every swing.