1. Adopting environmentally friendly plastic material, fitting the curve of the fuselage 2. Doesn't affect the rotation of the paddles, protects the paddles and flies safely at the same time 3. Fully-enclosed design, effective isolation, to prevent abrasion and scratching of the fuselage, double protection, can largely prevent injuries or object impact scratches on the fuselage 4. Lightweight design, does not affect the flight and endurance 5. Weight: about 5.7g 6. Size: about 8 x 5 x 1cm 7. Attention: only the protective cover, no others