Lefeda 2018 Cool Troodon Youth Baseball Bat 27in(-7), 28in(-8), 29in(-9), 30in(-10) Durable aluminum alloy with full rolled-over end Youth Baseball Bat(27"-30''): High strength 7000 Aircraft Alloy with T6 temper for fast swing speed Ultra-thin 27''/30" handle with cushioned grip--27in(-7), 28in(-8), 29in(-9), 30in(-10) Aircraft Alloy Alloy delivers perfect balance of high KSI strength and fracture toughness for long lasting performance