Item Name: For DIY Car 082A Robot Motor 8-tooth Gear Plastic Gears 2mm Bore Motor Gears. Thickness5mm nominal, 5.1mm actual measurementBore diameter: 1.95mm (tightly fitted 2mm shaft)Modulus: 0.5Number of teeth: 8 teethQuantity: 500PCSWeight: about 32gOuter diameter5mmPackage includes: 500 * gear Notes Due to manual measurement or shooting scenes, there may be some deviation or slight color difference. *Please make