Gigibon DJI Phantom 4 Quadcopter Accessories: 9450S Full Carbon Fiber Propellers Props with Aluminum Alloy Seat, Self-locking,with Installing Tools, 2 Packs, Black Full Carbon Fiber with Aluminum Alloy Seat, Reinforced Self-Tightening Propellers Props, 2 Packs (set of 4) Compatible with DJI Phantom 4 Quadcopters 9450S Carbon fiber balanced propellers, composite hubs attaching more firmly to your motors, improving reliability High quality carbon fiber propellers, lighter and much stronger, increasing flying efficiency Money-back satisfaction guaranteed.