Features: Engineered with premium metal construction, this brushless motor propeller adapter delivers power transmission efficiency for remote toy, minimizing energy loss during prolonged flight. Featuring easy installation design and broad compatibility with multiple brushless motor models, the metal hub ensures vibrations reduction and seamless integration across various drones configurations. Ideal for remote enthusiasts, competitive racers, and outdoor adventurers seeking good performances in demanding environments like obstacle courses or outdoor conditions. Optimized design maintains rotational stability during high speed maneuvers, making it perfect for precisions aerials shows, time trials competitions, or extended FPV flying. The corrosions resistant metal propeller hub combines aerodynamic precisions with durability, ensuring consistent thrust control across diverse weather conditions while reducing operational noise. Specifications: Component: Metal Size: 3x5mm, 3x6mm, 3.17x5mm, 3.17x6mm, 4x6mm, 5x8mm Package Includes: 6Pcs Propeller Adapter note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.