The 21-inch propeller is made of Ultra Carbon Pro, an advanced composite material, for lower rotational inertia in combination with high strength and stiffness. These are just the propeller blades, and not the whole propeller assembly. This is good if you broke a propeller but you still have the central hub and bolts. Please select CW or CCW, you will get two blades to replace the One 21 inch Prop
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The 21-inch propeller is made of Ultra Carbon Pro, an advanced composite material, for lower rotational inertia in combination with high strength and stiffness. These are just the propeller blades, and not the whole propeller assembly. This is good if you broke a propeller but you still have the central hub and bolts. Please select CW or CCW, you will get two blades to replace the One 21 inch Prop