1PC 0.5 Modulus 1.98mm/ 2.28mm/ 2.98mm Aperture Brass Copper Metal Worm Gear Transimission Gear for 2mm 2.3mm 3mm Shaft

1PC 0.5 Modulus 1.98mm/ 2.28mm/ 2.98mm Aperture Brass Copper Metal Worm Gear Transimission Gear for 2mm 2.3mm 3mm Shaft

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