Length: 54MM 
Width: 20MM 
Hole: 2MM
Root thickness: 2.5MM
Weight: 2.82 Grams/pair

Carbon Fiber tail rotor blades for Align TREX 450 size helicopters and similar Heli. Each set is precisely balanced to match center of gravity and weight. Blades have a fully symmetrical shape to add autority to your tail to do extreme 3D flying and for better stability.Extremely strong no flex.