Uxcell 30pcs Plastic Gears, 40 Teeth, Plastic Single Gears, Model 402AA, Reduction Gears for RC Car Models, DIY Robots, White, Module 0.5

Plastic gears are suitable for science DIY projects such as RC models, electric robots, and windmills, as well as educational projects to demonstrate gear ratios and other small motor DIY projects for home use. Model Gear, Outer Diameter: 21mm/0.83", Shaft Diameter: 2mm/0.08", Thickness: 4mm/0.16", Type: 402A, Module: 0.5, Teeth: 40, Material: Plastic, Color: White. Package includes 30 plastic gears. Plastic gears are made of plastic, durable, smooth, and sturdy, with a long service life. Installation and removal are easy and convenient. Please check the size carefully before ordering.