Heli Blade Balancer
If your Helicopter does not fly very stable or vibrating a lot, or you see a "Double Blade" effect on the main rotor, there could be many reasons. One of the big reason is the weight of the two main blades are not the same.
Main Blades are made by human hand, sometimes they may have very slight weight difference, when they were put on the rotor, the spinning will magnify the weight difference and causing the helicopter to vibrate. That's why the weight of all main blades should be fine tuned carefully.
Effectively minimizes helicopter blade vibration to enhance performance.
Ball bearing-equipped axles allow the blade platform to move smoothly and easily.
An adjustable weight ensures perfect level, as measured by the bubble level (not included).