10PCS 0.5M 7/8/9/10/11/12/13/14/15/16/17/18/19/20/21/22 Teeth 0.5Mod Gear Rack Spur Gear Precision Copper Steel Cnc Pinion

10PCS 0.5M 7/8/9/10/11/12/13/14/15/16/17/18/19/20/21/22 Teeth 0.5Mod Gear Rack Spur Gear Precision Copper Steel Cnc Pinion

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