Features: brand new and high quality Small size, stable flight and low noise. The propeller designed for F11S has light weight, good performance and durability.. After precise balanced test, the stiffness is higher, which provides a for stronger tension for the aircraft. Provide quieter flight and more powerful and stable power. Simple design, integrated with the drones, harmonious and beautiful. Specifications: Material:Plastic Application Model: For F11S Type:2 Pairs/4 Pairs Size:Approx. 19.2x2.4cm/7.56x0.94 inches Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 2 Package Optional: Package 1 Include: 2 Pair Propellers 8x Screws 1x Screwdriver Package 2 Include: 4 Pair Propellers 16x Screws 1x Screwdriver