Demarini CF5 Fastpitch Softball Bat (-9) In Chaos, DeMarini Found Strength: TR3 F.L.O. TR3 F.L.O (Fused Layer Optimized) Composite is a cutting edge formation of DeMarini's TR3 composite. Get over the fence in half the time: Half + Half Construction. DeMarini's Half + Half construction, the revolutionary two-piece hitting system introduced that silence feedback on off-center hits and creates the largest As if it needed an exclamation point: Clutch End Cap. Developed for exclusive use with DeMarini composite barrels, the Clutch End-Cap returns impact energy straight to the barrel