Hobbypower S550 F550 Upgrade Hexacopter Fuselage Frame Kit PCB with Carbon Fiber Landing Gear High quality PCB version carbon fiber material and exquisite design Center plate with solder point,Frame only, no electronic parts Made Carbon Rod inside the arm,to make the arm hard and strong,not shake. Wheelbase: 550mm,total weight with landing gear : 550g Pls be notiec that it is unassembled frame,you should built it by your self.