0.5M Copper Screw Gear 12/13/14/15/16/17/18/20 Teeth 3/4/5/6MM Hole 10MM Thickness M3 Gear

0.5M Copper Screw Gear 12/13/14/15/16/17/18/20 Teeth 3/4/5/6MM Hole 10MM Thickness M3 Gear

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