Fixedwing RC airplane propellers, sold as a set of four 2blade replacements for electric model aircraft. These lightweight plastic props are suitable for general flying and replacement use on a wide range of electric fixedwing models. Key features Package contents: 4 fixedwing airplane propellers, 2 vanes each. Available styles and sizes: 9x4.5 inch and 8x6 inch. Propeller diameters: 9 inch and 8 inch. Hub height options: 7.9 mm and 11.7 mm. Propeller washer sizes included: 7.7 mm, 5.7 mm, 4.8 mm, 3.8 mm, 3.0 mm, 2.8 mm. Material: durable plastic that reduces rotating mass for smoother motor response and long service life. Easy to balance for reduced vibration and stable flight. Why choose these propellers Versatile size options and included washers make it easier to match the correct diameter, pitch, and hub fit to your motor. Lightweight plastic construction lowers rotating mass, which can support more responsive throttle changes and reduced wear on the drivetrain. Simple to trim and balance, helping to reduce vibration and improve handling during flight. Compatibility and use Designed for electric fixedwing RC airplanes; suitable as replacement props or spares. Check the rotating diameter and pitch to confirm compatibility with your motor and airframe before ordering. Balance each propeller prior to installation for results. Practical use scenarios Field replacement: Keep a set in your toolkit for quick prop swaps after damage or for different flight conditions. Hobbyist upgrade: Swap to these props when testing alternate size and pitch combinations to tune thrust and efficiency. Trainer and sport models: Use on electric trainer planes and general sport aircraft for routine flying and practice sessions. Notes Verify the correct propeller diameter, pitch, and hub dimensions for your RC plane motor before installation. Always balance and secure propellers according to your model and motor manufacturer recommendations.