Lefeda 2018 New Troodon Design T-Ball Bats (-11) Durable aluminum alloy with full rolled-over end T-ball(25"): High strength 6061 Aircraft Alloy with T6 temper for fast swing speed Ultra-thin 29/32" handle with cushioned grip Aircraft Alloy Alloy delivers perfect balance of high KSI strength and fracture toughness for long lasting performance