Protocol Helicopter Parts. It can measure the air pressure at the ground level in real time, and automatically maintain the current operating altitude in real. All protocol helicopter spare parts kit (as indicated on the back of the box) for the thresher model are like new.
Rotor blades (4pcs)• landing gear (4pcs)• blade guards (4pcs). Insert the other end of the dc 8.4v power adapter into adapter input port of the battery charger. Outcome or cargo plane was available.
