1. Effectively reduce flight noise
2. 1:1 copy of the original blade
3. Quick-release replacement, reducing the difficulty of flight
4. Packing list: blade x 8, screwdriver x 1, screws x 12
5. Weight: about 0.5g for a single blade
6. Size: about 41 x 12 x 5mm
7. Note: this product does not include a drone