Welcome to our store! Application: The propeller can be effectively fixed to the motor without loosening. Compact Shape: Doesn't take up space, is lightweight, and doesn't affect flight. Durable Material: Made of nylon and aluminum alloy, strong, durable, and long-lasting. Applicable Model: Specifically designed for RC fixed-wing airplanes with a 5MM motor shaft diameter. Follows Aerodynamics: Can effectively increase speed and reduce the consumption of kinetic energy. Item Type: Propeller Clamps Color: Silver Material: Aluminum Alloy Weight: Approx. 59g/2.1oz Aperture: Approx. 5mm/0.2in (motor shaft) Outgoing Shaft Diameter: Approx. 8mm/0.3in Applicable: for RC fixed-wing aircraft with 5mm motor shaft diameter 5 x Propeller Clamps 100% Satisfaction: Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We will do our best to provide you with satisfactory after-sales service. Thank you for shopping with us!