Description This package consists of propeller guards that are best compatible with DIY F45o and 550 Quadcopter drones. With these prop guard, you will never break your props and crash your F450 F550 by accidentally bump into trees, walls, or any other obstacles. Application of F450 Propeller Guards The propeller covers can effectively protect your propellers from damage when they colliding with something. These propeller guards fit perfectly with the propellers, ensuring safe flight of your drone. Package Includes: 1 x 4PCS Blades Protection Frame Guard Protective Cover for F450 / F550 Propeller Specifications: Protection for Quadcopter Propellers Material ABS Material Dimensions approximately 10cms wide Weight approx 50 grams