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30122.5B 0.5M Plastic POM Gear Diameter 16mm 30 Teeth 12 Teeth Double Layer Gear 2.55mm Hole DIY Toy Parts Accessories 30T+12T

1pc 13T-19T 08B Sprocket with Bearing 13 15 17 19 Teeth Idler Sprocket Drive Chain Gear Bore 10 12 15 17 20mm 45# Steel Blacken

383A 0.5M 20MM Gear Modulus 0.5 38 Tooth Plastic Gear Disc Toy Accessories 10pcs/lot

1pcs 10A Sprocket Wheel 45# Steel Chain Gear with Step 10 /11/12/13/14/15/16/17/18/19/20 Teeth Bore 12-40mm Pitch 15.875mm

81A 0.4M Copper Gear 8 Teeth Aircraft Parts Toy Model Spindle Pinion Shaft Hole 0.98mm 8T

45# Steel 08A Dual-Drive Sprocket (10Teeth-30 Teeth) Fake Double Row Design for Single Roller Chain Industrial Transmission

1pc 20 22 25 35 Teeth 1.5M Left-hand Helical Gear 19°31′42″ High Precision 1.5 Module Rack Gear Bore 12 14 16 19-25mm 45# Steel

0.3M Modulus 8/9/10/11/12/13/14/15/16/18 Teeth Brass Metal Copper Gear Fit 1mm 1.5mm 2mm Shaft Toy Car Motor Transmission Gear

1PCS Blue Nylon Spur Gear 1.5M 1.5 Module 12/13/14/15/16/17/18/19/20/21/22/23/24/25/26-120 Teeth Plastic Flat Cylindrical Gear

Spur Gear 1M-12T/13T/14T/15T/16T/17T/18T/19T/20T/21T/22T SC45# Carbon Steel Blackening Cylindrical Gear Transmission Accessories

1pc 10T-20T 08B Industrial Drive Sprocket Wheel 45# Steel Chain Gear 10 11 12 13 14 15 16 17 18 19 20 Teeth Keyway Bore 10-35mm

91A 0.3M Copper Pinion 9 Teeth Aperture 0.97mm Tight for 1mm shaft Motor Gear Toy Aircraft Pinion 9T