Upgrade for agriculture drone with the [R2170 (21") Ultral Carbon PROPELLER(HELIX) Set]. These high-quality propellers are made from ultral carbon material, ensuring durability and performance. The helix design of the propellers improves efficiency and stability during flight. Compatible with -1, -1A, -1S, and -1P drones, this set includes 16 propellers. Enhance your drones performance and achieve better agricultural results with these top-notch propellers.