Eoutstanding 11Tooth Motor Gear 8Pcs Motor Wheel Gear Parts 11Teeths Spare Parts For H12C F181 U818A H502E H502S Rc QuadcopterSpecification Type Motor Wheel Gear Motor Gear Teeth 11T Gear Diameter 382Mm Gear Hole 1Mm 09Mm Packing Quantity 8Pcs Motor Gear Parts Compatible With F181 F181C F181W F181D..