Feature:1. Use Purpose: Propeller can be effectively fixed to the motor without loosening.2. Compact Shape: Does not take up space, light weight, and does not affect the flight.3. Durable Material: Made of nylon and aluminum alloy, strong, durable and long service life.4. Applicable Model: Suitable for XXD for Sunnysky 2212 2217 brushless motor and other RC fixed wing aircraft.5. Comply with Aerodynamics: Can effectively increase the speed and reduce the consumption of kinesthetic energy.Specification:Item Type: Propeller ClampsColor: SilverMaterial: Aluminum AlloyWeight: Approx.35g/1.2ozAperture: Approx. 4mm/0.16in (Motor Shaft)Output Shaft Diameter: Approx. 6mm/0.24inApplicable: for XXD for Sunnysky 2212 2217 Brushless Motor and Other RC Fixed Wing Aircraft.Package List:5 x Propeller ClampsNote:1. Please allow 01 inch error due to manual measurement. Thanks for your understanding.2. Due to the difference between different monitors, the picture may not reflect the actual color of the object.