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3Pcs/Lot 92A Brass Gears 0.4 Module 9 Teeth 2mm Hole 4.4mm Diameter 4mm Height Copper Metal DIY Hardware Accessories

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

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

102.5A 0.5M Pinion OD=6mm 10T Modulus 0.5 10 Tooth POM Plastic Gear Motor Wheel Toy Accessories J102.5A

1pcs 18T-21T 1.5M Spur Gear 1.5 Mod 18/19/20/21 Teeth 45# Steel Step/Flat Motor Gears Cylindrical Gear Bore 5-20mm

1PCS 1.5M 12T-28T Spur Gear Pinion Bore 6/8/10/12/14/15/16mm Model 1.5 Motor Gear With Step OD 21mm-45mm Carbon Steel

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

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