Features: brand new and high quality This gear is high-quality nylon + metal material, which is durable, not easy to deform, and can be used with confidence. This gear with 36 teeth can help you better control your products, with fine workmanship and long service life. Portable design: The gear is small in size, light in weight and easy to carry. Electric bicycle motor gear, toothed planetary gear, suitable for motor Time-saving and labor-saving: The gear is easy to install, no complicated operations, time-saving and labor-saving. Specifications: Material:Nylon+Metal Size: Approx.3.8x1.3cm/1.5x0.51inch Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 3 Pcsx Nylon Gear