Features: Upgrade your 500mm plane 's performances with this 4 blade propeller set, engineered for superior lift and stability across diverse flight conditions while maintaining perfect compatibility. Crafted from high strength effect resistant plastic, these easy carry yet strong propellers enhances maneuverability and speed without compromising structural integrity during intense maneuvers. Ideal for aviation enthusiasts and hobbyists seeking stable upgrade parts for their remote control plane models requiring precise 500mm component replacements. Perfect for outdoor recreational flying, backyard practice event , or competitive aircraft event where responsive thrust and weather resistant performances matter most. Each package includes two identical 4 blade propellers specifically contoured for 500mm models, ensuring quick installation and consistent rotation balance for prolonged flight enjoyment. Specifications: Component : Plastic Length: about 5.4cm/2.12inch Package Includes: 2x4 Blade Propeller note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color from the item.