1PC 0.5 Modulus 6mm Metal Brass Worm Gear Copper Transimission Gear 2mm 2.3mm 3mm Motor Shaft Axis Hole Copper Helical Gear

1PC 0.5 Modulus 6mm Metal Brass Worm Gear Copper Transimission Gear 2mm 2.3mm 3mm Motor Shaft Axis Hole Copper Helical Gear

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