Top Flite Power Point Precision Magnetic Balancer Prevent vibration problems by perfecting balance Magnetic power holds the balancing shaft in place, for virtually friction-free operation and near perfect accuracy Assembles in seconds - and becomes its own storage case after use Balance all spinning components of your models: propellers, spinners, rotors, and even wheels Capable of suspending objects up to a maximum weight of approximately 5.5 ounces (156 grams)