Features: Engineered for 4, these 1158F noise reducing propellers Wing cut flight noise by 30% while enhancing stability in wind up to 10m/s with composite construction. Easy installation enables sub 30 second blade replacements, paireds with 2 backup set for continuous operation during photography and surveying missions. Professional cinematographers, commercial photographers, and mapping engineers benefits from vibration damped performances for imaging in challenging. Optimized for film production sites, wind swept outdoor locations, and extended drones missions requiring silents operations and wind resistance up to 10m/s. Precisions molded nylon fiberglasses Wing maintain perfect balances for 4 drones, eliminating calibration needs while delivering cinema flight stability. Specifications: Product material: Nylon and glass fiber Product size: 270x28mm/10.63x1.10inch Package Includes: 2Pair Propellers Wing note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.