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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

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

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

C282A 0.5M Crown Gear Wheel 28T Od=15mm DIY Model Motor Cog-wheel Toy Parts

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 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

S122.5A 0.5M Bevel Gears 12 Teeth 2.5mm Shaft Hole Plastic Teeth Gear Toy Parts Accessories 10pcs/lot

9T 1M Copper Gear Module 1.0 9 Teeth Inner Diameter 3.1 Mini Pinion 2PCS/LOT

30102B 0.5M Plastic POM Gear Diameter 16mm 30 Teeth 10 Teeth Double Layer Gear 2.05mm Hole DIY Toy Parts 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