Caution: These blades are expendable parts. Before every flight,you should carefully examine them. If anything seems wrong even slightly crashes or any contacts,stop use these blades. Responsible and carefully check with any steps and its equipments.Choose from a suitable flying location to ensure safely for everyone. REQUIRES: Mounting to motor shaf

Caution: These blades are expendable parts. Before every flight,you should carefully examine them. If anything seems wrong even slightly crashes or any contacts,stop use these blades. Responsible and carefully check with any steps and its equipments.Choose from a suitable flying location to ensure safely for everyone. REQUIRES: Mounting to motor shaf