100% Original Hubsan Quadcopter Upgrade Protection Propeller Prop Protector Blade Guard for Hubsan X4 H107C H107L WLtoys V252 JD385- H107C-A19-PRO Black High quality and durable in use. Protects the rotor blades when crashing into walls or hitting the floor upside down. Easy to install. No influence to aircraft flying. Cut your repairs in half.