The MP Jet Metal Spinner is a high-quality accessory for RC airplanes, specifically designed for rigid propellers. With a diameter of 40 millimeters and a shaft diameter of 5 millimeters, this spinner offers a precise fit and ensures stable operation. Made from robust metal, the spinner is characterized by its durability and resilience. The silver surface gives it an appealing look and contributes to the overall aesthetics of the aircraft. The spinner is designed to provide a smooth run without vibrations, which is crucial for optimal performance during flight. This product is ideal for model builders and RC enthusiasts who value quality and precision. The MP Jet Metal Spinner is a reliable choice to enhance the performance and appearance of your RC airplane.