1Set Copper 1:87 Modulus 0.2 15T Micro Brass Turbine Worm Static Change Gear Hole Dia 0.8mm/1mm Reduction Pinion Shaft Connector

1Set Copper 1:87 Modulus 0.2 15T Micro Brass Turbine Worm Static Change Gear Hole Dia 0.8mm/1mm Reduction Pinion Shaft Connector

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