Tools Name 325 Carbon Fiber Main Rotor Blade (Angle) Jazrider No. JR-HBL-00018 Suitable For Esky EK1H-E013/14 Belt CP, EK1H-E015 Belt-CP (Carbon), Align 450 X / XL / SE / SE V2, HDE, Walkera 39# Helicopter Color Black Lenght 325mm Width 32mm Grip 5mm Hole Diameter dia. 3.0 mm Fat 44g Material Carbon Dietary Fiber