uxcell Gray Plastic 2-Vanes RC Airplane Prop Propeller 9x6 + Adapter Rings Product Name : 9060Propeller;Vanes Number : 2;Model : 9x6(Non-OEM) Motor Shaft Hole Dia : 9.8mm / 0.39", 9.8mm/ 0.39"(Contary);Total Length(Rotating Diameter) : 229mm / 9";Pitch : 152mm / 6" Max Thickness : 11.6mm / 0.46";Shaft Size Adapter Ring Inner Dia : Biggest: 8.1mm/0.32"Smallest: 3.3mm/0.13" Material : Plastic;Color : Gray Weight : 22g;Package Content : 1 Pcs x Propellers7 x Shaft Size Adapter Ring