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
