100% Brand new and high quality Fixed center axis maglev type means test、 to ensure a balance of zero resistanceCF propeller balancer (suspension) is applicable to any size and weight of less than 40 grams of fixed-wing propeller helicopter、 4-axis aircraft rotor、 marine propellers、 vehicle wheels、 turbine blades and the flywheelMaterial: Alloy  Size: 8*5*7.5cm Color: Gold