Provided additional protection and safety with these Propeller Guards for Mantis Q Drone from YUNEEC. Even the best drone pilots can have an accident. Rapidly spinning propellers can break when coming in contact with trees or rocks, not to mention the danger of harming innocent bystanders. This set of four propeller guards are designed to attach to your Mantis Q quadcopter, providing a shield around each propeller blade. The guard comes into contact with an object first, reducing the chances of direct contact with the propeller blade.