Upgrade: Designed specifically for NI 1 drone models, ensuring compatibility. Durability: Crafted to withstand various flying conditions, enhancing your flying experience. Performance: Optimizes flight time and stability for a smoother aerial performance. Versatility: Suitable for recreational and professional drone flights, making every flight enjoyable. Replacement: Convenient 8 pcs set, providing ample supply for regular replacements. Installation: Comes with screws for easy and quick installation, allowing you to get back to flying. Compact: Lightweight design minimizes impact on drone performance, enhancing maneuverability.