Features 1、Thin Blade: The RC carbon fiber propeller carefully optimizes the blade outline and calculates the blade outline through a computer to make the blade thickness extremely thin. 2、High Accuracy: RC folding propeller length is 305mm, the diameter of the small hole in the middle of the folding propeller is 6mm, and the diameter of the large hole in the middle of the folding propeller is 9mm. 3、Accurate Operation: The carbon fiber propeller reduces the power absorption of the motor, thus ensuring high accuracy and high efficiency operation during use. 4、Genuine Carbon Fiber Materials: The folding propeller blades are all made of carbon fiber, a material that gives the blade a very high torsional stiffness. 5、Scope of Application: The heavy duty RC aluminum alloy propeller is suitable for fixed wing, suitable for common installation sizes of various brands of motors. Item Type: RC Folding Propeller Material: Carbon Fiber, Aluminum Alloy Product Length: Approx. 305mm /12.0in Adapter Circle Inner Diameter: Approx. 5mm / 0.2in Small Hole Diameter in the Middle: Approx. 6mm / 0.2in Large Hole Diameter in the Middle: Approx. 9mm / 0.4in Application: Fixed wing, suitable for general installation size of various brands of motors Package List 1 x RC Folding Propeller 1 x Adapter Circle