Louisville Slugger Senior League Prime 916 (-10) 28"/18 OZ Maximum SPEED. Extreme POWER. Ultimate BALANCE. Get your bat to the zone FAST and get maximum POP with the PRIME 916. Its premium patent pending FCS (Fused Carbon Structure) composite handle and barrel, patented TRU3 Explosive Power Transfer technology, and 3-piece construction give the PRIME 916 a lighter swing weight ensuring maximum control, a massive sweet spot with extreme barrel flex, and dramatically reduced vibration compared to other bats. The PRIME 916 gives you the best possible FEEL and unmatched PERFORMANCE when you make contact.